Home / 12,115.85-18,173.79-3,350.78

Finding the Fourth Proportional to 12,115.85, 18,173.79 and 3,350.78

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Solution

The fourth proportional to 12,115.85, 18,173.79 and 3,350.78 is: 5,026.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.85 : 18,173.79 = 3,350.78 : x
  2. Step 2: Convert to fraction form
    12,115.85/18,173.79 = 3,350.78/x
  3. Step 3: Cross multiply
    12,115.85x = 18,173.79 × 3,350.78
  4. Step 4: Simplify right side
    12,115.85x = 60,896,349.34
  5. Step 5: Solve for x
    x = 60,896,349.34/12,115.85
  6. Step 6: Final answer
    x = 5,026.17

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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.