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Finding the Fourth Proportional to 10,487.90, 15,713.22 and 5,560.94

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Solution

The fourth proportional to 10,487.90, 15,713.22 and 5,560.94 is: 8,331.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.90 : 15,713.22 = 5,560.94 : x
  2. Step 2: Convert to fraction form
    10,487.90/15,713.22 = 5,560.94/x
  3. Step 3: Cross multiply
    10,487.90x = 15,713.22 × 5,560.94
  4. Step 4: Simplify right side
    10,487.90x = 87,380,273.63
  5. Step 5: Solve for x
    x = 87,380,273.63/10,487.90
  6. Step 6: Final answer
    x = 8,331.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.