Home / 13,606.98-18,781.55-8,229.42

Finding the Fourth Proportional to 13,606.98, 18,781.55 and 8,229.42

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Solution

The fourth proportional to 13,606.98, 18,781.55 and 8,229.42 is: 11,358.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.98 : 18,781.55 = 8,229.42 : x
  2. Step 2: Convert to fraction form
    13,606.98/18,781.55 = 8,229.42/x
  3. Step 3: Cross multiply
    13,606.98x = 18,781.55 × 8,229.42
  4. Step 4: Simplify right side
    13,606.98x = 154,561,222.05
  5. Step 5: Solve for x
    x = 154,561,222.05/13,606.98
  6. Step 6: Final answer
    x = 11,358.97

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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.