Home / 15,517.78-21,414.99-8,444.66

Finding the Fourth Proportional to 15,517.78, 21,414.99 and 8,444.66

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Solution

The fourth proportional to 15,517.78, 21,414.99 and 8,444.66 is: 11,653.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.78 : 21,414.99 = 8,444.66 : x
  2. Step 2: Convert to fraction form
    15,517.78/21,414.99 = 8,444.66/x
  3. Step 3: Cross multiply
    15,517.78x = 21,414.99 × 8,444.66
  4. Step 4: Simplify right side
    15,517.78x = 180,842,309.45
  5. Step 5: Solve for x
    x = 180,842,309.45/15,517.78
  6. Step 6: Final answer
    x = 11,653.88

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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.