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Finding the Fourth Proportional to 12,497.10, 18,745.65 and 7,248.30

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Solution

The fourth proportional to 12,497.10, 18,745.65 and 7,248.30 is: 10,872.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,497.10 : 18,745.65 = 7,248.30 : x
  2. Step 2: Convert to fraction form
    12,497.10/18,745.65 = 7,248.30/x
  3. Step 3: Cross multiply
    12,497.10x = 18,745.65 × 7,248.30
  4. Step 4: Simplify right side
    12,497.10x = 135,874,094.90
  5. Step 5: Solve for x
    x = 135,874,094.90/12,497.10
  6. Step 6: Final answer
    x = 10,872.45

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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.