Home / 18,742.60-25,860.53-11,191.38

Finding the Fourth Proportional to 18,742.60, 25,860.53 and 11,191.38

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Solution

The fourth proportional to 18,742.60, 25,860.53 and 11,191.38 is: 15,441.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.60 : 25,860.53 = 11,191.38 : x
  2. Step 2: Convert to fraction form
    18,742.60/25,860.53 = 11,191.38/x
  3. Step 3: Cross multiply
    18,742.60x = 25,860.53 × 11,191.38
  4. Step 4: Simplify right side
    18,742.60x = 289,414,832.97
  5. Step 5: Solve for x
    x = 289,414,832.97/18,742.60
  6. Step 6: Final answer
    x = 15,441.55

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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.