Home / 15,323.38-21,146.25-8,609.20

Finding the Fourth Proportional to 15,323.38, 21,146.25 and 8,609.20

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Solution

The fourth proportional to 15,323.38, 21,146.25 and 8,609.20 is: 11,880.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,323.38 : 21,146.25 = 8,609.20 : x
  2. Step 2: Convert to fraction form
    15,323.38/21,146.25 = 8,609.20/x
  3. Step 3: Cross multiply
    15,323.38x = 21,146.25 × 8,609.20
  4. Step 4: Simplify right side
    15,323.38x = 182,052,295.50
  5. Step 5: Solve for x
    x = 182,052,295.50/15,323.38
  6. Step 6: Final answer
    x = 11,880.69

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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.