Home / 18,840.66-28,265.85-8,456.46

Finding the Fourth Proportional to 18,840.66, 28,265.85 and 8,456.46

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Solution

The fourth proportional to 18,840.66, 28,265.85 and 8,456.46 is: 12,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,840.66 : 28,265.85 = 8,456.46 : x
  2. Step 2: Convert to fraction form
    18,840.66/28,265.85 = 8,456.46/x
  3. Step 3: Cross multiply
    18,840.66x = 28,265.85 × 8,456.46
  4. Step 4: Simplify right side
    18,840.66x = 239,029,029.89
  5. Step 5: Solve for x
    x = 239,029,029.89/18,840.66
  6. Step 6: Final answer
    x = 12,686.87

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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.