Home / 20,669.28-31,003.92-5,086.91

Finding the Fourth Proportional to 20,669.28, 31,003.92 and 5,086.91

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Solution

The fourth proportional to 20,669.28, 31,003.92 and 5,086.91 is: 7,630.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.28 : 31,003.92 = 5,086.91 : x
  2. Step 2: Convert to fraction form
    20,669.28/31,003.92 = 5,086.91/x
  3. Step 3: Cross multiply
    20,669.28x = 31,003.92 × 5,086.91
  4. Step 4: Simplify right side
    20,669.28x = 157,713,995.67
  5. Step 5: Solve for x
    x = 157,713,995.67/20,669.28
  6. Step 6: Final answer
    x = 7,630.36

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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.