Home / 12,258.08-18,387.12-7,329.14

Finding the Fourth Proportional to 12,258.08, 18,387.12 and 7,329.14

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Solution

The fourth proportional to 12,258.08, 18,387.12 and 7,329.14 is: 10,993.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,258.08 : 18,387.12 = 7,329.14 : x
  2. Step 2: Convert to fraction form
    12,258.08/18,387.12 = 7,329.14/x
  3. Step 3: Cross multiply
    12,258.08x = 18,387.12 × 7,329.14
  4. Step 4: Simplify right side
    12,258.08x = 134,761,776.68
  5. Step 5: Solve for x
    x = 134,761,776.68/12,258.08
  6. Step 6: Final answer
    x = 10,993.71

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.