Home / 18,126,013,961.38-25,012,772,204.93-9,987,361,925.93

Finding the Fourth Proportional to 18,126,013,961.38, 25,012,772,204.93 and 9,987,361,925.93

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Solution

The fourth proportional to 18,126,013,961.38, 25,012,772,204.93 and 9,987,361,925.93 is: 13,781,938,451.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126,013,961.38 : 25,012,772,204.93 = 9,987,361,925.93 : x
  2. Step 2: Convert to fraction form
    18,126,013,961.38/25,012,772,204.93 = 9,987,361,925.93/x
  3. Step 3: Cross multiply
    18,126,013,961.38x = 25,012,772,204.93 × 9,987,361,925.93
  4. Step 4: Simplify right side
    18,126,013,961.38x = 249,811,608,781,580,664,832
  5. Step 5: Solve for x
    x = 249,811,608,781,580,664,832/18,126,013,961.38
  6. Step 6: Final answer
    x = 13,781,938,451.21

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Double scale
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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.