Home / 20,707.20-31,042.14-7,550.34

Finding the Fourth Proportional to 20,707.20, 31,042.14 and 7,550.34

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Solution

The fourth proportional to 20,707.20, 31,042.14 and 7,550.34 is: 11,318.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.20 : 31,042.14 = 7,550.34 : x
  2. Step 2: Convert to fraction form
    20,707.20/31,042.14 = 7,550.34/x
  3. Step 3: Cross multiply
    20,707.20x = 31,042.14 × 7,550.34
  4. Step 4: Simplify right side
    20,707.20x = 234,378,711.33
  5. Step 5: Solve for x
    x = 234,378,711.33/20,707.20
  6. Step 6: Final answer
    x = 11,318.71

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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.