Home / 12,153.57-18,230.37-3,388.71

Finding the Fourth Proportional to 12,153.57, 18,230.37 and 3,388.71

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Solution

The fourth proportional to 12,153.57, 18,230.37 and 3,388.71 is: 5,083.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153.57 : 18,230.37 = 3,388.71 : x
  2. Step 2: Convert to fraction form
    12,153.57/18,230.37 = 3,388.71/x
  3. Step 3: Cross multiply
    12,153.57x = 18,230.37 × 3,388.71
  4. Step 4: Simplify right side
    12,153.57x = 61,777,437.12
  5. Step 5: Solve for x
    x = 61,777,437.12/12,153.57
  6. Step 6: Final answer
    x = 5,083.07

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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.