Home / 18,747.68-28,062.96-12,512.80

Finding the Fourth Proportional to 18,747.68, 28,062.96 and 12,512.80

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Solution

The fourth proportional to 18,747.68, 28,062.96 and 12,512.80 is: 18,730.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.68 : 28,062.96 = 12,512.80 : x
  2. Step 2: Convert to fraction form
    18,747.68/28,062.96 = 12,512.80/x
  3. Step 3: Cross multiply
    18,747.68x = 28,062.96 × 12,512.80
  4. Step 4: Simplify right side
    18,747.68x = 351,146,205.89
  5. Step 5: Solve for x
    x = 351,146,205.89/18,747.68
  6. Step 6: Final answer
    x = 18,730.12

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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.