Home / 20,932.04-31,402.92-6,140.90

Finding the Fourth Proportional to 20,932.04, 31,402.92 and 6,140.90

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Solution

The fourth proportional to 20,932.04, 31,402.92 and 6,140.90 is: 9,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.04 : 31,402.92 = 6,140.90 : x
  2. Step 2: Convert to fraction form
    20,932.04/31,402.92 = 6,140.90/x
  3. Step 3: Cross multiply
    20,932.04x = 31,402.92 × 6,140.90
  4. Step 4: Simplify right side
    20,932.04x = 192,842,191.43
  5. Step 5: Solve for x
    x = 192,842,191.43/20,932.04
  6. Step 6: Final answer
    x = 9,212.78

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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.