Home / 12,160.20-18,240.30-3,395.10

Finding the Fourth Proportional to 12,160.20, 18,240.30 and 3,395.10

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Solution

The fourth proportional to 12,160.20, 18,240.30 and 3,395.10 is: 5,092.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.20 : 18,240.30 = 3,395.10 : x
  2. Step 2: Convert to fraction form
    12,160.20/18,240.30 = 3,395.10/x
  3. Step 3: Cross multiply
    12,160.20x = 18,240.30 × 3,395.10
  4. Step 4: Simplify right side
    12,160.20x = 61,927,642.53
  5. Step 5: Solve for x
    x = 61,927,642.53/12,160.20
  6. Step 6: Final answer
    x = 5,092.65

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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.