Home / 20,932.28-28,887.96-11,500.96

Finding the Fourth Proportional to 20,932.28, 28,887.96 and 11,500.96

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Solution

The fourth proportional to 20,932.28, 28,887.96 and 11,500.96 is: 15,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.28 : 28,887.96 = 11,500.96 : x
  2. Step 2: Convert to fraction form
    20,932.28/28,887.96 = 11,500.96/x
  3. Step 3: Cross multiply
    20,932.28x = 28,887.96 × 11,500.96
  4. Step 4: Simplify right side
    20,932.28x = 332,239,272.44
  5. Step 5: Solve for x
    x = 332,239,272.44/20,932.28
  6. Step 6: Final answer
    x = 15,872.10

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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.