Home / 12,778.46-17,612.11-12,040.35

Finding the Fourth Proportional to 12,778.46, 17,612.11 and 12,040.35

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Solution

The fourth proportional to 12,778.46, 17,612.11 and 12,040.35 is: 16,594.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.46 : 17,612.11 = 12,040.35 : x
  2. Step 2: Convert to fraction form
    12,778.46/17,612.11 = 12,040.35/x
  3. Step 3: Cross multiply
    12,778.46x = 17,612.11 × 12,040.35
  4. Step 4: Simplify right side
    12,778.46x = 212,055,883.78
  5. Step 5: Solve for x
    x = 212,055,883.78/12,778.46
  6. Step 6: Final answer
    x = 16,594.79

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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.