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Finding the Fourth Proportional to 15,439.20, 23,154 and 5,577.20

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Solution

The fourth proportional to 15,439.20, 23,154 and 5,577.20 is: 8,364.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.20 : 23,154 = 5,577.20 : x
  2. Step 2: Convert to fraction form
    15,439.20/23,154 = 5,577.20/x
  3. Step 3: Cross multiply
    15,439.20x = 23,154 × 5,577.20
  4. Step 4: Simplify right side
    15,439.20x = 129,134,488.80
  5. Step 5: Solve for x
    x = 129,134,488.80/15,439.20
  6. Step 6: Final answer
    x = 8,364.07

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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.