Home / 12,331.20-18,537.72-11,418.06

Finding the Fourth Proportional to 12,331.20, 18,537.72 and 11,418.06

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Solution

The fourth proportional to 12,331.20, 18,537.72 and 11,418.06 is: 17,164.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,331.20 : 18,537.72 = 11,418.06 : x
  2. Step 2: Convert to fraction form
    12,331.20/18,537.72 = 11,418.06/x
  3. Step 3: Cross multiply
    12,331.20x = 18,537.72 × 11,418.06
  4. Step 4: Simplify right side
    12,331.20x = 211,664,799.22
  5. Step 5: Solve for x
    x = 211,664,799.22/12,331.20
  6. Step 6: Final answer
    x = 17,164.98

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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.