Home / 20,738.61-28,613.25-11,785.95

Finding the Fourth Proportional to 20,738.61, 28,613.25 and 11,785.95

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Solution

The fourth proportional to 20,738.61, 28,613.25 and 11,785.95 is: 16,261.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.61 : 28,613.25 = 11,785.95 : x
  2. Step 2: Convert to fraction form
    20,738.61/28,613.25 = 11,785.95/x
  3. Step 3: Cross multiply
    20,738.61x = 28,613.25 × 11,785.95
  4. Step 4: Simplify right side
    20,738.61x = 337,234,333.84
  5. Step 5: Solve for x
    x = 337,234,333.84/20,738.61
  6. Step 6: Final answer
    x = 16,261.18

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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.