Home / 20,695.11-31,042.62-7,542.11

Finding the Fourth Proportional to 20,695.11, 31,042.62 and 7,542.11

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Solution

The fourth proportional to 20,695.11, 31,042.62 and 7,542.11 is: 11,313.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.11 : 31,042.62 = 7,542.11 : x
  2. Step 2: Convert to fraction form
    20,695.11/31,042.62 = 7,542.11/x
  3. Step 3: Cross multiply
    20,695.11x = 31,042.62 × 7,542.11
  4. Step 4: Simplify right side
    20,695.11x = 234,126,699.52
  5. Step 5: Solve for x
    x = 234,126,699.52/20,695.11
  6. Step 6: Final answer
    x = 11,313.14

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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.