Home / 18,768.28-25,882.62-11,689.72

Finding the Fourth Proportional to 18,768.28, 25,882.62 and 11,689.72

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Solution

The fourth proportional to 18,768.28, 25,882.62 and 11,689.72 is: 16,120.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.28 : 25,882.62 = 11,689.72 : x
  2. Step 2: Convert to fraction form
    18,768.28/25,882.62 = 11,689.72/x
  3. Step 3: Cross multiply
    18,768.28x = 25,882.62 × 11,689.72
  4. Step 4: Simplify right side
    18,768.28x = 302,560,580.67
  5. Step 5: Solve for x
    x = 302,560,580.67/18,768.28
  6. Step 6: Final answer
    x = 16,120.85

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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.