Home / 12,150.78-18,226.17-3,386.39

Finding the Fourth Proportional to 12,150.78, 18,226.17 and 3,386.39

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Solution

The fourth proportional to 12,150.78, 18,226.17 and 3,386.39 is: 5,079.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.78 : 18,226.17 = 3,386.39 : x
  2. Step 2: Convert to fraction form
    12,150.78/18,226.17 = 3,386.39/x
  3. Step 3: Cross multiply
    12,150.78x = 18,226.17 × 3,386.39
  4. Step 4: Simplify right side
    12,150.78x = 61,720,828.70
  5. Step 5: Solve for x
    x = 61,720,828.70/12,150.78
  6. Step 6: Final answer
    x = 5,079.58

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Half scale
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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.