Home / 20,658.34-28,508.52-11,226.88

Finding the Fourth Proportional to 20,658.34, 28,508.52 and 11,226.88

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Solution

The fourth proportional to 20,658.34, 28,508.52 and 11,226.88 is: 15,493.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.34 : 28,508.52 = 11,226.88 : x
  2. Step 2: Convert to fraction form
    20,658.34/28,508.52 = 11,226.88/x
  3. Step 3: Cross multiply
    20,658.34x = 28,508.52 × 11,226.88
  4. Step 4: Simplify right side
    20,658.34x = 320,061,733.02
  5. Step 5: Solve for x
    x = 320,061,733.02/20,658.34
  6. Step 6: Final answer
    x = 15,493.10

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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.