Home / 20,658.30-28,508.54-11,226.80

Finding the Fourth Proportional to 20,658.30, 28,508.54 and 11,226.80

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Solution

The fourth proportional to 20,658.30, 28,508.54 and 11,226.80 is: 15,493.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.30 : 28,508.54 = 11,226.80 : x
  2. Step 2: Convert to fraction form
    20,658.30/28,508.54 = 11,226.80/x
  3. Step 3: Cross multiply
    20,658.30x = 28,508.54 × 11,226.80
  4. Step 4: Simplify right side
    20,658.30x = 320,059,478.20
  5. Step 5: Solve for x
    x = 320,059,478.20/20,658.30
  6. Step 6: Final answer
    x = 15,493.02

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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.