Home / 39,432.60-54,417.15-21,528

Finding the Fourth Proportional to 39,432.60, 54,417.15 and 21,528

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Solution

The fourth proportional to 39,432.60, 54,417.15 and 21,528 is: 29,708.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,432.60 : 54,417.15 = 21,528 : x
  2. Step 2: Convert to fraction form
    39,432.60/54,417.15 = 21,528/x
  3. Step 3: Cross multiply
    39,432.60x = 54,417.15 × 21,528
  4. Step 4: Simplify right side
    39,432.60x = 1,171,492,405.20
  5. Step 5: Solve for x
    x = 1,171,492,405.20/39,432.60
  6. Step 6: Final answer
    x = 29,708.73

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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.