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Finding the Fourth Proportional to 28,793, 43,170.92 and 12,148.60

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Solution

The fourth proportional to 28,793, 43,170.92 and 12,148.60 is: 18,215.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,793 : 43,170.92 = 12,148.60 : x
  2. Step 2: Convert to fraction form
    28,793/43,170.92 = 12,148.60/x
  3. Step 3: Cross multiply
    28,793x = 43,170.92 × 12,148.60
  4. Step 4: Simplify right side
    28,793x = 524,466,238.71
  5. Step 5: Solve for x
    x = 524,466,238.71/28,793
  6. Step 6: Final answer
    x = 18,215.06

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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.