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Finding the Fourth Proportional to 12,050.40, 18,062.40 and 4,255.20

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Solution

The fourth proportional to 12,050.40, 18,062.40 and 4,255.20 is: 6,378.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,050.40 : 18,062.40 = 4,255.20 : x
  2. Step 2: Convert to fraction form
    12,050.40/18,062.40 = 4,255.20/x
  3. Step 3: Cross multiply
    12,050.40x = 18,062.40 × 4,255.20
  4. Step 4: Simplify right side
    12,050.40x = 76,859,124.48
  5. Step 5: Solve for x
    x = 76,859,124.48/12,050.40
  6. Step 6: Final answer
    x = 6,378.14

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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.