Home / 20,703.92-31,042.50-8,865.44

Finding the Fourth Proportional to 20,703.92, 31,042.50 and 8,865.44

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Solution

The fourth proportional to 20,703.92, 31,042.50 and 8,865.44 is: 13,292.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.92 : 31,042.50 = 8,865.44 : x
  2. Step 2: Convert to fraction form
    20,703.92/31,042.50 = 8,865.44/x
  3. Step 3: Cross multiply
    20,703.92x = 31,042.50 × 8,865.44
  4. Step 4: Simplify right side
    20,703.92x = 275,205,265.99
  5. Step 5: Solve for x
    x = 275,205,265.99/20,703.92
  6. Step 6: Final answer
    x = 13,292.43

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1.5x scale

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.