Home / 20,187.45-27,854.91-11,234.95

Finding the Fourth Proportional to 20,187.45, 27,854.91 and 11,234.95

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Solution

The fourth proportional to 20,187.45, 27,854.91 and 11,234.95 is: 15,502.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.45 : 27,854.91 = 11,234.95 : x
  2. Step 2: Convert to fraction form
    20,187.45/27,854.91 = 11,234.95/x
  3. Step 3: Cross multiply
    20,187.45x = 27,854.91 × 11,234.95
  4. Step 4: Simplify right side
    20,187.45x = 312,948,451.47
  5. Step 5: Solve for x
    x = 312,948,451.47/20,187.45
  6. Step 6: Final answer
    x = 15,502.13

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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.