Home / 39,938.78-59,915.25-13,637.36

Finding the Fourth Proportional to 39,938.78, 59,915.25 and 13,637.36

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Solution

The fourth proportional to 39,938.78, 59,915.25 and 13,637.36 is: 20,458.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,938.78 : 59,915.25 = 13,637.36 : x
  2. Step 2: Convert to fraction form
    39,938.78/59,915.25 = 13,637.36/x
  3. Step 3: Cross multiply
    39,938.78x = 59,915.25 × 13,637.36
  4. Step 4: Simplify right side
    39,938.78x = 817,085,534.16
  5. Step 5: Solve for x
    x = 817,085,534.16/39,938.78
  6. Step 6: Final answer
    x = 20,458.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.