Home / 18,126,013,963.38-25,012,772,207.68-9,987,361,927.94

Finding the Fourth Proportional to 18,126,013,963.38, 25,012,772,207.68 and 9,987,361,927.94

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Solution

The fourth proportional to 18,126,013,963.38, 25,012,772,207.68 and 9,987,361,927.94 is: 13,781,938,453.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126,013,963.38 : 25,012,772,207.68 = 9,987,361,927.94 : x
  2. Step 2: Convert to fraction form
    18,126,013,963.38/25,012,772,207.68 = 9,987,361,927.94/x
  3. Step 3: Cross multiply
    18,126,013,963.38x = 25,012,772,207.68 × 9,987,361,927.94
  4. Step 4: Simplify right side
    18,126,013,963.38x = 249,811,608,859,219,001,344
  5. Step 5: Solve for x
    x = 249,811,608,859,219,001,344/18,126,013,963.38
  6. Step 6: Final answer
    x = 13,781,938,453.98

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Double scale
Find fourth proportional to 18,126,013,964.38, 25,012,772,209.06 and 9,987,361,928.94
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.