Home / 20,922.32-31,385.55-6,876.65

Finding the Fourth Proportional to 20,922.32, 31,385.55 and 6,876.65

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Solution

The fourth proportional to 20,922.32, 31,385.55 and 6,876.65 is: 10,315.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.32 : 31,385.55 = 6,876.65 : x
  2. Step 2: Convert to fraction form
    20,922.32/31,385.55 = 6,876.65/x
  3. Step 3: Cross multiply
    20,922.32x = 31,385.55 × 6,876.65
  4. Step 4: Simplify right side
    20,922.32x = 215,827,577.29
  5. Step 5: Solve for x
    x = 215,827,577.29/20,922.32
  6. Step 6: Final answer
    x = 10,315.66

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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.