Home / 20,934.35-31,378.13-9,074.43

Finding the Fourth Proportional to 20,934.35, 31,378.13 and 9,074.43

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Solution

The fourth proportional to 20,934.35, 31,378.13 and 9,074.43 is: 13,601.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.35 : 31,378.13 = 9,074.43 : x
  2. Step 2: Convert to fraction form
    20,934.35/31,378.13 = 9,074.43/x
  3. Step 3: Cross multiply
    20,934.35x = 31,378.13 × 9,074.43
  4. Step 4: Simplify right side
    20,934.35x = 284,738,683.92
  5. Step 5: Solve for x
    x = 284,738,683.92/20,934.35
  6. Step 6: Final answer
    x = 13,601.51

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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.