Home / 15,534.27-21,436.47-8,819.73

Finding the Fourth Proportional to 15,534.27, 21,436.47 and 8,819.73

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Solution

The fourth proportional to 15,534.27, 21,436.47 and 8,819.73 is: 12,170.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.27 : 21,436.47 = 8,819.73 : x
  2. Step 2: Convert to fraction form
    15,534.27/21,436.47 = 8,819.73/x
  3. Step 3: Cross multiply
    15,534.27x = 21,436.47 × 8,819.73
  4. Step 4: Simplify right side
    15,534.27x = 189,063,877.55
  5. Step 5: Solve for x
    x = 189,063,877.55/15,534.27
  6. Step 6: Final answer
    x = 12,170.76

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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.