Home / 19,882.15-29,821.67-8,789.20

Finding the Fourth Proportional to 19,882.15, 29,821.67 and 8,789.20

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Solution

The fourth proportional to 19,882.15, 29,821.67 and 8,789.20 is: 13,183.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,882.15 : 29,821.67 = 8,789.20 : x
  2. Step 2: Convert to fraction form
    19,882.15/29,821.67 = 8,789.20/x
  3. Step 3: Cross multiply
    19,882.15x = 29,821.67 × 8,789.20
  4. Step 4: Simplify right side
    19,882.15x = 262,108,621.96
  5. Step 5: Solve for x
    x = 262,108,621.96/19,882.15
  6. Step 6: Final answer
    x = 13,183.11

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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.