Home / 20,908.65-31,363.25-6,117.87

Finding the Fourth Proportional to 20,908.65, 31,363.25 and 6,117.87

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Solution

The fourth proportional to 20,908.65, 31,363.25 and 6,117.87 is: 9,176.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.65 : 31,363.25 = 6,117.87 : x
  2. Step 2: Convert to fraction form
    20,908.65/31,363.25 = 6,117.87/x
  3. Step 3: Cross multiply
    20,908.65x = 31,363.25 × 6,117.87
  4. Step 4: Simplify right side
    20,908.65x = 191,876,255.69
  5. Step 5: Solve for x
    x = 191,876,255.69/20,908.65
  6. Step 6: Final answer
    x = 9,176.88

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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.