Home / 12,111.70-18,167.55-11,431.30

Finding the Fourth Proportional to 12,111.70, 18,167.55 and 11,431.30

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Solution

The fourth proportional to 12,111.70, 18,167.55 and 11,431.30 is: 17,146.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111.70 : 18,167.55 = 11,431.30 : x
  2. Step 2: Convert to fraction form
    12,111.70/18,167.55 = 11,431.30/x
  3. Step 3: Cross multiply
    12,111.70x = 18,167.55 × 11,431.30
  4. Step 4: Simplify right side
    12,111.70x = 207,678,714.32
  5. Step 5: Solve for x
    x = 207,678,714.32/12,111.70
  6. Step 6: Final answer
    x = 17,146.95

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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.