Home / 20,934.52-31,395.53-6,891.95

Finding the Fourth Proportional to 20,934.52, 31,395.53 and 6,891.95

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Solution

The fourth proportional to 20,934.52, 31,395.53 and 6,891.95 is: 10,335.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.52 : 31,395.53 = 6,891.95 : x
  2. Step 2: Convert to fraction form
    20,934.52/31,395.53 = 6,891.95/x
  3. Step 3: Cross multiply
    20,934.52x = 31,395.53 × 6,891.95
  4. Step 4: Simplify right side
    20,934.52x = 216,376,518.70
  5. Step 5: Solve for x
    x = 216,376,518.70/20,934.52
  6. Step 6: Final answer
    x = 10,335.87

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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.