Home / 20,934.26-31,400.95-6,142.85

Finding the Fourth Proportional to 20,934.26, 31,400.95 and 6,142.85

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Solution

The fourth proportional to 20,934.26, 31,400.95 and 6,142.85 is: 9,214.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.26 : 31,400.95 = 6,142.85 : x
  2. Step 2: Convert to fraction form
    20,934.26/31,400.95 = 6,142.85/x
  3. Step 3: Cross multiply
    20,934.26x = 31,400.95 × 6,142.85
  4. Step 4: Simplify right side
    20,934.26x = 192,891,325.71
  5. Step 5: Solve for x
    x = 192,891,325.71/20,934.26
  6. Step 6: Final answer
    x = 9,214.15

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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.