Home / 20,229.12-30,294.45-13,972.47

Finding the Fourth Proportional to 20,229.12, 30,294.45 and 13,972.47

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Solution

The fourth proportional to 20,229.12, 30,294.45 and 13,972.47 is: 20,924.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,229.12 : 30,294.45 = 13,972.47 : x
  2. Step 2: Convert to fraction form
    20,229.12/30,294.45 = 13,972.47/x
  3. Step 3: Cross multiply
    20,229.12x = 30,294.45 × 13,972.47
  4. Step 4: Simplify right side
    20,229.12x = 423,288,293.79
  5. Step 5: Solve for x
    x = 423,288,293.79/20,229.12
  6. Step 6: Final answer
    x = 20,924.70

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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.