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Finding the Fourth Proportional to 39,433.68, 59,130.68 and 21,915.60

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Solution

The fourth proportional to 39,433.68, 59,130.68 and 21,915.60 is: 32,862.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,433.68 : 59,130.68 = 21,915.60 : x
  2. Step 2: Convert to fraction form
    39,433.68/59,130.68 = 21,915.60/x
  3. Step 3: Cross multiply
    39,433.68x = 59,130.68 × 21,915.60
  4. Step 4: Simplify right side
    39,433.68x = 1,295,884,330.61
  5. Step 5: Solve for x
    x = 1,295,884,330.61/39,433.68
  6. Step 6: Final answer
    x = 32,862.37

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1.5x scale

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.