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Finding the Fourth Proportional to 10,991.87, 15,174.03 and 6,275.24

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Solution

The fourth proportional to 10,991.87, 15,174.03 and 6,275.24 is: 8,662.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.87 : 15,174.03 = 6,275.24 : x
  2. Step 2: Convert to fraction form
    10,991.87/15,174.03 = 6,275.24/x
  3. Step 3: Cross multiply
    10,991.87x = 15,174.03 × 6,275.24
  4. Step 4: Simplify right side
    10,991.87x = 95,220,604.15
  5. Step 5: Solve for x
    x = 95,220,604.15/10,991.87
  6. Step 6: Final answer
    x = 8,662.83

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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.