Home / 39,990.88-55,187.84-22,086.34

Finding the Fourth Proportional to 39,990.88, 55,187.84 and 22,086.34

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Solution

The fourth proportional to 39,990.88, 55,187.84 and 22,086.34 is: 30,479.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,990.88 : 55,187.84 = 22,086.34 : x
  2. Step 2: Convert to fraction form
    39,990.88/55,187.84 = 22,086.34/x
  3. Step 3: Cross multiply
    39,990.88x = 55,187.84 × 22,086.34
  4. Step 4: Simplify right side
    39,990.88x = 1,218,897,398.11
  5. Step 5: Solve for x
    x = 1,218,897,398.11/39,990.88
  6. Step 6: Final answer
    x = 30,479.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.