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Finding the Fourth Proportional to 12,540, 18,818.66 and 4,332

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Solution

The fourth proportional to 12,540, 18,818.66 and 4,332 is: 6,500.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540 : 18,818.66 = 4,332 : x
  2. Step 2: Convert to fraction form
    12,540/18,818.66 = 4,332/x
  3. Step 3: Cross multiply
    12,540x = 18,818.66 × 4,332
  4. Step 4: Simplify right side
    12,540x = 81,522,413.46
  5. Step 5: Solve for x
    x = 81,522,413.46/12,540
  6. Step 6: Final answer
    x = 6,500.99

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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.