Home / 13,151.76-18,149.40-7,562.76

Finding the Fourth Proportional to 13,151.76, 18,149.40 and 7,562.76

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Solution

The fourth proportional to 13,151.76, 18,149.40 and 7,562.76 is: 10,436.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.76 : 18,149.40 = 7,562.76 : x
  2. Step 2: Convert to fraction form
    13,151.76/18,149.40 = 7,562.76/x
  3. Step 3: Cross multiply
    13,151.76x = 18,149.40 × 7,562.76
  4. Step 4: Simplify right side
    13,151.76x = 137,259,556.34
  5. Step 5: Solve for x
    x = 137,259,556.34/13,151.76
  6. Step 6: Final answer
    x = 10,436.59

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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.