Home / 20,966.04-31,434.48-9,272.88

Finding the Fourth Proportional to 20,966.04, 31,434.48 and 9,272.88

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Solution

The fourth proportional to 20,966.04, 31,434.48 and 9,272.88 is: 13,902.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.04 : 31,434.48 = 9,272.88 : x
  2. Step 2: Convert to fraction form
    20,966.04/31,434.48 = 9,272.88/x
  3. Step 3: Cross multiply
    20,966.04x = 31,434.48 × 9,272.88
  4. Step 4: Simplify right side
    20,966.04x = 291,488,160.90
  5. Step 5: Solve for x
    x = 291,488,160.90/20,966.04
  6. Step 6: Final answer
    x = 13,902.87

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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.