Home / 15,517.04-23,279.20-5,128.78

Finding the Fourth Proportional to 15,517.04, 23,279.20 and 5,128.78

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Solution

The fourth proportional to 15,517.04, 23,279.20 and 5,128.78 is: 7,694.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.04 : 23,279.20 = 5,128.78 : x
  2. Step 2: Convert to fraction form
    15,517.04/23,279.20 = 5,128.78/x
  3. Step 3: Cross multiply
    15,517.04x = 23,279.20 × 5,128.78
  4. Step 4: Simplify right side
    15,517.04x = 119,393,895.38
  5. Step 5: Solve for x
    x = 119,393,895.38/15,517.04
  6. Step 6: Final answer
    x = 7,694.37

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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.