Home / 12,146.07-18,220.05-3,381.69

Finding the Fourth Proportional to 12,146.07, 18,220.05 and 3,381.69

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Solution

The fourth proportional to 12,146.07, 18,220.05 and 3,381.69 is: 5,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.07 : 18,220.05 = 3,381.69 : x
  2. Step 2: Convert to fraction form
    12,146.07/18,220.05 = 3,381.69/x
  3. Step 3: Cross multiply
    12,146.07x = 18,220.05 × 3,381.69
  4. Step 4: Simplify right side
    12,146.07x = 61,614,560.88
  5. Step 5: Solve for x
    x = 61,614,560.88/12,146.07
  6. Step 6: Final answer
    x = 5,072.80

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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.