Home / 20,468.38-28,244.22-11,515.12

Finding the Fourth Proportional to 20,468.38, 28,244.22 and 11,515.12

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Solution

The fourth proportional to 20,468.38, 28,244.22 and 11,515.12 is: 15,889.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.38 : 28,244.22 = 11,515.12 : x
  2. Step 2: Convert to fraction form
    20,468.38/28,244.22 = 11,515.12/x
  3. Step 3: Cross multiply
    20,468.38x = 28,244.22 × 11,515.12
  4. Step 4: Simplify right side
    20,468.38x = 325,235,582.61
  5. Step 5: Solve for x
    x = 325,235,582.61/20,468.38
  6. Step 6: Final answer
    x = 15,889.66

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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.