Home / 15,279.10-22,814.12-13,687.55

Finding the Fourth Proportional to 15,279.10, 22,814.12 and 13,687.55

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Solution

The fourth proportional to 15,279.10, 22,814.12 and 13,687.55 is: 20,437.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279.10 : 22,814.12 = 13,687.55 : x
  2. Step 2: Convert to fraction form
    15,279.10/22,814.12 = 13,687.55/x
  3. Step 3: Cross multiply
    15,279.10x = 22,814.12 × 13,687.55
  4. Step 4: Simplify right side
    15,279.10x = 312,269,294.14
  5. Step 5: Solve for x
    x = 312,269,294.14/15,279.10
  6. Step 6: Final answer
    x = 20,437.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.