Home / 12,118.91-18,178.37-3,799.58

Finding the Fourth Proportional to 12,118.91, 18,178.37 and 3,799.58

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Solution

The fourth proportional to 12,118.91, 18,178.37 and 3,799.58 is: 5,699.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.91 : 18,178.37 = 3,799.58 : x
  2. Step 2: Convert to fraction form
    12,118.91/18,178.37 = 3,799.58/x
  3. Step 3: Cross multiply
    12,118.91x = 18,178.37 × 3,799.58
  4. Step 4: Simplify right side
    12,118.91x = 69,070,171.08
  5. Step 5: Solve for x
    x = 69,070,171.08/12,118.91
  6. Step 6: Final answer
    x = 5,699.37

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Double scale
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Similar ratio
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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.