Home / 15,169.24-22,775.10-7,778.92

Finding the Fourth Proportional to 15,169.24, 22,775.10 and 7,778.92

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Solution

The fourth proportional to 15,169.24, 22,775.10 and 7,778.92 is: 11,679.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,169.24 : 22,775.10 = 7,778.92 : x
  2. Step 2: Convert to fraction form
    15,169.24/22,775.10 = 7,778.92/x
  3. Step 3: Cross multiply
    15,169.24x = 22,775.10 × 7,778.92
  4. Step 4: Simplify right side
    15,169.24x = 177,165,680.89
  5. Step 5: Solve for x
    x = 177,165,680.89/15,169.24
  6. Step 6: Final answer
    x = 11,679.27

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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.