Home / 20,835.43-31,256.38-6,981.19

Finding the Fourth Proportional to 20,835.43, 31,256.38 and 6,981.19

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Solution

The fourth proportional to 20,835.43, 31,256.38 and 6,981.19 is: 10,472.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.43 : 31,256.38 = 6,981.19 : x
  2. Step 2: Convert to fraction form
    20,835.43/31,256.38 = 6,981.19/x
  3. Step 3: Cross multiply
    20,835.43x = 31,256.38 × 6,981.19
  4. Step 4: Simplify right side
    20,835.43x = 218,206,658.08
  5. Step 5: Solve for x
    x = 218,206,658.08/20,835.43
  6. Step 6: Final answer
    x = 10,472.87

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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.