Home / 22,191.35-30,620.07-13,686.66

Finding the Fourth Proportional to 22,191.35, 30,620.07 and 13,686.66

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Solution

The fourth proportional to 22,191.35, 30,620.07 and 13,686.66 is: 18,885.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,191.35 : 30,620.07 = 13,686.66 : x
  2. Step 2: Convert to fraction form
    22,191.35/30,620.07 = 13,686.66/x
  3. Step 3: Cross multiply
    22,191.35x = 30,620.07 × 13,686.66
  4. Step 4: Simplify right side
    22,191.35x = 419,086,487.27
  5. Step 5: Solve for x
    x = 419,086,487.27/22,191.35
  6. Step 6: Final answer
    x = 18,885.13

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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.