Home / 15,517.41-21,414.12-8,443.88

Finding the Fourth Proportional to 15,517.41, 21,414.12 and 8,443.88

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Solution

The fourth proportional to 15,517.41, 21,414.12 and 8,443.88 is: 11,652.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.41 : 21,414.12 = 8,443.88 : x
  2. Step 2: Convert to fraction form
    15,517.41/21,414.12 = 8,443.88/x
  3. Step 3: Cross multiply
    15,517.41x = 21,414.12 × 8,443.88
  4. Step 4: Simplify right side
    15,517.41x = 180,818,264.48
  5. Step 5: Solve for x
    x = 180,818,264.48/15,517.41
  6. Step 6: Final answer
    x = 11,652.61

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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.