Home / 20,872.91-31,312.31-6,834.08

Finding the Fourth Proportional to 20,872.91, 31,312.31 and 6,834.08

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Solution

The fourth proportional to 20,872.91, 31,312.31 and 6,834.08 is: 10,252.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.91 : 31,312.31 = 6,834.08 : x
  2. Step 2: Convert to fraction form
    20,872.91/31,312.31 = 6,834.08/x
  3. Step 3: Cross multiply
    20,872.91x = 31,312.31 × 6,834.08
  4. Step 4: Simplify right side
    20,872.91x = 213,990,753.24
  5. Step 5: Solve for x
    x = 213,990,753.24/20,872.91
  6. Step 6: Final answer
    x = 10,252.08

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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.