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Finding the Fourth Proportional to 12,630.74, 18,918.96 and 10,248.12

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Solution

The fourth proportional to 12,630.74, 18,918.96 and 10,248.12 is: 15,350.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.74 : 18,918.96 = 10,248.12 : x
  2. Step 2: Convert to fraction form
    12,630.74/18,918.96 = 10,248.12/x
  3. Step 3: Cross multiply
    12,630.74x = 18,918.96 × 10,248.12
  4. Step 4: Simplify right side
    12,630.74x = 193,883,772.36
  5. Step 5: Solve for x
    x = 193,883,772.36/12,630.74
  6. Step 6: Final answer
    x = 15,350.15

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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.