Home / 18,515.85-27,709.19-15,145.14

Finding the Fourth Proportional to 18,515.85, 27,709.19 and 15,145.14

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Solution

The fourth proportional to 18,515.85, 27,709.19 and 15,145.14 is: 22,664.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.85 : 27,709.19 = 15,145.14 : x
  2. Step 2: Convert to fraction form
    18,515.85/27,709.19 = 15,145.14/x
  3. Step 3: Cross multiply
    18,515.85x = 27,709.19 × 15,145.14
  4. Step 4: Simplify right side
    18,515.85x = 419,659,486.11
  5. Step 5: Solve for x
    x = 419,659,486.11/18,515.85
  6. Step 6: Final answer
    x = 22,664.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.