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Finding the Fourth Proportional to 12,152.70, 18,227.84 and 3,387.69

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Solution

The fourth proportional to 12,152.70, 18,227.84 and 3,387.69 is: 5,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,152.70 : 18,227.84 = 3,387.69 : x
  2. Step 2: Convert to fraction form
    12,152.70/18,227.84 = 3,387.69/x
  3. Step 3: Cross multiply
    12,152.70x = 18,227.84 × 3,387.69
  4. Step 4: Simplify right side
    12,152.70x = 61,750,254.35
  5. Step 5: Solve for x
    x = 61,750,254.35/12,152.70
  6. Step 6: Final answer
    x = 5,081.20

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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.