Home / 13,245.38-18,278.56-7,195.59

Finding the Fourth Proportional to 13,245.38, 18,278.56 and 7,195.59

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Solution

The fourth proportional to 13,245.38, 18,278.56 and 7,195.59 is: 9,929.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.38 : 18,278.56 = 7,195.59 : x
  2. Step 2: Convert to fraction form
    13,245.38/18,278.56 = 7,195.59/x
  3. Step 3: Cross multiply
    13,245.38x = 18,278.56 × 7,195.59
  4. Step 4: Simplify right side
    13,245.38x = 131,525,032.54
  5. Step 5: Solve for x
    x = 131,525,032.54/13,245.38
  6. Step 6: Final answer
    x = 9,929.88

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Half scale
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Double scale
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Similar ratio
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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.