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Finding the Fourth Proportional to 18,293.31, 27,440.10 and 5,147.01

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Solution

The fourth proportional to 18,293.31, 27,440.10 and 5,147.01 is: 7,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,293.31 : 27,440.10 = 5,147.01 : x
  2. Step 2: Convert to fraction form
    18,293.31/27,440.10 = 5,147.01/x
  3. Step 3: Cross multiply
    18,293.31x = 27,440.10 × 5,147.01
  4. Step 4: Simplify right side
    18,293.31x = 141,234,469.10
  5. Step 5: Solve for x
    x = 141,234,469.10/18,293.31
  6. Step 6: Final answer
    x = 7,720.55

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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.