Home / 15,517.78-21,414.59-8,444.21

Finding the Fourth Proportional to 15,517.78, 21,414.59 and 8,444.21

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Solution

The fourth proportional to 15,517.78, 21,414.59 and 8,444.21 is: 11,653.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.78 : 21,414.59 = 8,444.21 : x
  2. Step 2: Convert to fraction form
    15,517.78/21,414.59 = 8,444.21/x
  3. Step 3: Cross multiply
    15,517.78x = 21,414.59 × 8,444.21
  4. Step 4: Simplify right side
    15,517.78x = 180,829,295.02
  5. Step 5: Solve for x
    x = 180,829,295.02/15,517.78
  6. Step 6: Final answer
    x = 11,653.04

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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.