Home / 20,458.85-28,229.91-11,505.82

Finding the Fourth Proportional to 20,458.85, 28,229.91 and 11,505.82

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Solution

The fourth proportional to 20,458.85, 28,229.91 and 11,505.82 is: 15,876.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.85 : 28,229.91 = 11,505.82 : x
  2. Step 2: Convert to fraction form
    20,458.85/28,229.91 = 11,505.82/x
  3. Step 3: Cross multiply
    20,458.85x = 28,229.91 × 11,505.82
  4. Step 4: Simplify right side
    20,458.85x = 324,808,263.08
  5. Step 5: Solve for x
    x = 324,808,263.08/20,458.85
  6. Step 6: Final answer
    x = 15,876.17

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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.