Home / 13,151.22-18,148.55-7,182.87

Finding the Fourth Proportional to 13,151.22, 18,148.55 and 7,182.87

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Solution

The fourth proportional to 13,151.22, 18,148.55 and 7,182.87 is: 9,912.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.22 : 18,148.55 = 7,182.87 : x
  2. Step 2: Convert to fraction form
    13,151.22/18,148.55 = 7,182.87/x
  3. Step 3: Cross multiply
    13,151.22x = 18,148.55 × 7,182.87
  4. Step 4: Simplify right side
    13,151.22x = 130,358,675.34
  5. Step 5: Solve for x
    x = 130,358,675.34/13,151.22
  6. Step 6: Final answer
    x = 9,912.29

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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.