Home / 20,472.29-28,249.79-12,522.54

Finding the Fourth Proportional to 20,472.29, 28,249.79 and 12,522.54

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Solution

The fourth proportional to 20,472.29, 28,249.79 and 12,522.54 is: 17,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.29 : 28,249.79 = 12,522.54 : x
  2. Step 2: Convert to fraction form
    20,472.29/28,249.79 = 12,522.54/x
  3. Step 3: Cross multiply
    20,472.29x = 28,249.79 × 12,522.54
  4. Step 4: Simplify right side
    20,472.29x = 353,759,062.65
  5. Step 5: Solve for x
    x = 353,759,062.65/20,472.29
  6. Step 6: Final answer
    x = 17,279.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.