Home / 10,990.38-15,166.08-6,514.56

Finding the Fourth Proportional to 10,990.38, 15,166.08 and 6,514.56

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Solution

The fourth proportional to 10,990.38, 15,166.08 and 6,514.56 is: 8,989.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.38 : 15,166.08 = 6,514.56 : x
  2. Step 2: Convert to fraction form
    10,990.38/15,166.08 = 6,514.56/x
  3. Step 3: Cross multiply
    10,990.38x = 15,166.08 × 6,514.56
  4. Step 4: Simplify right side
    10,990.38x = 98,800,338.12
  5. Step 5: Solve for x
    x = 98,800,338.12/10,990.38
  6. Step 6: Final answer
    x = 8,989.71

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Half scale
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Double scale
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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.