Home / 12,115.78-18,169.01-4,719.26

Finding the Fourth Proportional to 12,115.78, 18,169.01 and 4,719.26

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Solution

The fourth proportional to 12,115.78, 18,169.01 and 4,719.26 is: 7,077.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.78 : 18,169.01 = 4,719.26 : x
  2. Step 2: Convert to fraction form
    12,115.78/18,169.01 = 4,719.26/x
  3. Step 3: Cross multiply
    12,115.78x = 18,169.01 × 4,719.26
  4. Step 4: Simplify right side
    12,115.78x = 85,744,321.66
  5. Step 5: Solve for x
    x = 85,744,321.66/12,115.78
  6. Step 6: Final answer
    x = 7,077.08

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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.