Home / 13,162.38-18,164.52-8,126.43

Finding the Fourth Proportional to 13,162.38, 18,164.52 and 8,126.43

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Solution

The fourth proportional to 13,162.38, 18,164.52 and 8,126.43 is: 11,214.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,162.38 : 18,164.52 = 8,126.43 : x
  2. Step 2: Convert to fraction form
    13,162.38/18,164.52 = 8,126.43/x
  3. Step 3: Cross multiply
    13,162.38x = 18,164.52 × 8,126.43
  4. Step 4: Simplify right side
    13,162.38x = 147,612,700.26
  5. Step 5: Solve for x
    x = 147,612,700.26/13,162.38
  6. Step 6: Final answer
    x = 11,214.74

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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.