Home / 9,154.38-12,620.82-7,272.21

Finding the Fourth Proportional to 9,154.38, 12,620.82 and 7,272.21

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Solution

The fourth proportional to 9,154.38, 12,620.82 and 7,272.21 is: 10,025.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,154.38 : 12,620.82 = 7,272.21 : x
  2. Step 2: Convert to fraction form
    9,154.38/12,620.82 = 7,272.21/x
  3. Step 3: Cross multiply
    9,154.38x = 12,620.82 × 7,272.21
  4. Step 4: Simplify right side
    9,154.38x = 91,781,190.31
  5. Step 5: Solve for x
    x = 91,781,190.31/9,154.38
  6. Step 6: Final answer
    x = 10,025.94

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Half scale
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Double scale
Find fourth proportional to 9,155.38, 12,622.20 and 7,273.21
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.