Home / 20,337.72-28,064.54-11,839.88

Finding the Fourth Proportional to 20,337.72, 28,064.54 and 11,839.88

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Solution

The fourth proportional to 20,337.72, 28,064.54 and 11,839.88 is: 16,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.72 : 28,064.54 = 11,839.88 : x
  2. Step 2: Convert to fraction form
    20,337.72/28,064.54 = 11,839.88/x
  3. Step 3: Cross multiply
    20,337.72x = 28,064.54 × 11,839.88
  4. Step 4: Simplify right side
    20,337.72x = 332,280,785.86
  5. Step 5: Solve for x
    x = 332,280,785.86/20,337.72
  6. Step 6: Final answer
    x = 16,338.15

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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.