Home / 15,006.28-20,708.38-8,291.76

Finding the Fourth Proportional to 15,006.28, 20,708.38 and 8,291.76

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Solution

The fourth proportional to 15,006.28, 20,708.38 and 8,291.76 is: 11,442.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,006.28 : 20,708.38 = 8,291.76 : x
  2. Step 2: Convert to fraction form
    15,006.28/20,708.38 = 8,291.76/x
  3. Step 3: Cross multiply
    15,006.28x = 20,708.38 × 8,291.76
  4. Step 4: Simplify right side
    15,006.28x = 171,708,974.90
  5. Step 5: Solve for x
    x = 171,708,974.90/15,006.28
  6. Step 6: Final answer
    x = 11,442.48

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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.