Home / 15,534.52-21,438.17-8,819.92

Finding the Fourth Proportional to 15,534.52, 21,438.17 and 8,819.92

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Solution

The fourth proportional to 15,534.52, 21,438.17 and 8,819.92 is: 12,171.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.52 : 21,438.17 = 8,819.92 : x
  2. Step 2: Convert to fraction form
    15,534.52/21,438.17 = 8,819.92/x
  3. Step 3: Cross multiply
    15,534.52x = 21,438.17 × 8,819.92
  4. Step 4: Simplify right side
    15,534.52x = 189,082,944.35
  5. Step 5: Solve for x
    x = 189,082,944.35/15,534.52
  6. Step 6: Final answer
    x = 12,171.79

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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.