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Finding the Fourth Proportional to 10,908.43, 15,055.04 and 6,658.60

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Solution

The fourth proportional to 10,908.43, 15,055.04 and 6,658.60 is: 9,189.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908.43 : 15,055.04 = 6,658.60 : x
  2. Step 2: Convert to fraction form
    10,908.43/15,055.04 = 6,658.60/x
  3. Step 3: Cross multiply
    10,908.43x = 15,055.04 × 6,658.60
  4. Step 4: Simplify right side
    10,908.43x = 100,245,489.34
  5. Step 5: Solve for x
    x = 100,245,489.34/10,908.43
  6. Step 6: Final answer
    x = 9,189.73

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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.