Home / 18,191.74-25,100.13-11,115.58

Finding the Fourth Proportional to 18,191.74, 25,100.13 and 11,115.58

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Solution

The fourth proportional to 18,191.74, 25,100.13 and 11,115.58 is: 15,336.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191.74 : 25,100.13 = 11,115.58 : x
  2. Step 2: Convert to fraction form
    18,191.74/25,100.13 = 11,115.58/x
  3. Step 3: Cross multiply
    18,191.74x = 25,100.13 × 11,115.58
  4. Step 4: Simplify right side
    18,191.74x = 279,002,503.03
  5. Step 5: Solve for x
    x = 279,002,503.03/18,191.74
  6. Step 6: Final answer
    x = 15,336.77

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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.