Home / 12,640,655.47-17,443,980.35-6,839,309.92

Finding the Fourth Proportional to 12,640,655.47, 17,443,980.35 and 6,839,309.92

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Solution

The fourth proportional to 12,640,655.47, 17,443,980.35 and 6,839,309.92 is: 9,438,180.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640,655.47 : 17,443,980.35 = 6,839,309.92 : x
  2. Step 2: Convert to fraction form
    12,640,655.47/17,443,980.35 = 6,839,309.92/x
  3. Step 3: Cross multiply
    12,640,655.47x = 17,443,980.35 × 6,839,309.92
  4. Step 4: Simplify right side
    12,640,655.47x = 119,304,787,781,918.44
  5. Step 5: Solve for x
    x = 119,304,787,781,918.44/12,640,655.47
  6. Step 6: Final answer
    x = 9,438,180.49

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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.