Home / 12,140.19-16,644.15-11,918.75

Finding the Fourth Proportional to 12,140.19, 16,644.15 and 11,918.75

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Solution

The fourth proportional to 12,140.19, 16,644.15 and 11,918.75 is: 16,340.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.19 : 16,644.15 = 11,918.75 : x
  2. Step 2: Convert to fraction form
    12,140.19/16,644.15 = 11,918.75/x
  3. Step 3: Cross multiply
    12,140.19x = 16,644.15 × 11,918.75
  4. Step 4: Simplify right side
    12,140.19x = 198,377,379.59
  5. Step 5: Solve for x
    x = 198,377,379.59/12,140.19
  6. Step 6: Final answer
    x = 16,340.55

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.