Home / 12,778.45-17,619.17-8,747.22

Finding the Fourth Proportional to 12,778.45, 17,619.17 and 8,747.22

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Solution

The fourth proportional to 12,778.45, 17,619.17 and 8,747.22 is: 12,060.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.45 : 17,619.17 = 8,747.22 : x
  2. Step 2: Convert to fraction form
    12,778.45/17,619.17 = 8,747.22/x
  3. Step 3: Cross multiply
    12,778.45x = 17,619.17 × 8,747.22
  4. Step 4: Simplify right side
    12,778.45x = 154,118,756.21
  5. Step 5: Solve for x
    x = 154,118,756.21/12,778.45
  6. Step 6: Final answer
    x = 12,060.83

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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.