Home / 20,488.72-28,275.19-11,414.90

Finding the Fourth Proportional to 20,488.72, 28,275.19 and 11,414.90

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Solution

The fourth proportional to 20,488.72, 28,275.19 and 11,414.90 is: 15,752.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.72 : 28,275.19 = 11,414.90 : x
  2. Step 2: Convert to fraction form
    20,488.72/28,275.19 = 11,414.90/x
  3. Step 3: Cross multiply
    20,488.72x = 28,275.19 × 11,414.90
  4. Step 4: Simplify right side
    20,488.72x = 322,758,466.33
  5. Step 5: Solve for x
    x = 322,758,466.33/20,488.72
  6. Step 6: Final answer
    x = 15,752.98

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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.