Home / 21,402.18-32,068.14-20,581.92

Finding the Fourth Proportional to 21,402.18, 32,068.14 and 20,581.92

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Solution

The fourth proportional to 21,402.18, 32,068.14 and 20,581.92 is: 30,839.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.18 : 32,068.14 = 20,581.92 : x
  2. Step 2: Convert to fraction form
    21,402.18/32,068.14 = 20,581.92/x
  3. Step 3: Cross multiply
    21,402.18x = 32,068.14 × 20,581.92
  4. Step 4: Simplify right side
    21,402.18x = 660,023,892.03
  5. Step 5: Solve for x
    x = 660,023,892.03/21,402.18
  6. Step 6: Final answer
    x = 30,839.10

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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.