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Finding the Fourth Proportional to 10,990.98, 15,167.49 and 6,275.25

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Solution

The fourth proportional to 10,990.98, 15,167.49 and 6,275.25 is: 8,659.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.98 : 15,167.49 = 6,275.25 : x
  2. Step 2: Convert to fraction form
    10,990.98/15,167.49 = 6,275.25/x
  3. Step 3: Cross multiply
    10,990.98x = 15,167.49 × 6,275.25
  4. Step 4: Simplify right side
    10,990.98x = 95,179,791.62
  5. Step 5: Solve for x
    x = 95,179,791.62/10,990.98
  6. Step 6: Final answer
    x = 8,659.81

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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.