Home / 15,170.79-22,760.68-7,780.44

Finding the Fourth Proportional to 15,170.79, 22,760.68 and 7,780.44

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Solution

The fourth proportional to 15,170.79, 22,760.68 and 7,780.44 is: 11,672.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,170.79 : 22,760.68 = 7,780.44 : x
  2. Step 2: Convert to fraction form
    15,170.79/22,760.68 = 7,780.44/x
  3. Step 3: Cross multiply
    15,170.79x = 22,760.68 × 7,780.44
  4. Step 4: Simplify right side
    15,170.79x = 177,088,105.10
  5. Step 5: Solve for x
    x = 177,088,105.10/15,170.79
  6. Step 6: Final answer
    x = 11,672.97

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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.