Home / 20,534.28-28,336.98-11,581.80

Finding the Fourth Proportional to 20,534.28, 28,336.98 and 11,581.80

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Solution

The fourth proportional to 20,534.28, 28,336.98 and 11,581.80 is: 15,982.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.28 : 28,336.98 = 11,581.80 : x
  2. Step 2: Convert to fraction form
    20,534.28/28,336.98 = 11,581.80/x
  3. Step 3: Cross multiply
    20,534.28x = 28,336.98 × 11,581.80
  4. Step 4: Simplify right side
    20,534.28x = 328,193,234.96
  5. Step 5: Solve for x
    x = 328,193,234.96/20,534.28
  6. Step 6: Final answer
    x = 15,982.70

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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.