Home / 20,996.28-31,490.10-9,302.04

Finding the Fourth Proportional to 20,996.28, 31,490.10 and 9,302.04

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Solution

The fourth proportional to 20,996.28, 31,490.10 and 9,302.04 is: 13,951.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.28 : 31,490.10 = 9,302.04 : x
  2. Step 2: Convert to fraction form
    20,996.28/31,490.10 = 9,302.04/x
  3. Step 3: Cross multiply
    20,996.28x = 31,490.10 × 9,302.04
  4. Step 4: Simplify right side
    20,996.28x = 292,922,169.80
  5. Step 5: Solve for x
    x = 292,922,169.80/20,996.28
  6. Step 6: Final answer
    x = 13,951.15

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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.