Home / 22,143.15-30,557.43-12,714.75

Finding the Fourth Proportional to 22,143.15, 30,557.43 and 12,714.75

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Solution

The fourth proportional to 22,143.15, 30,557.43 and 12,714.75 is: 17,546.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,143.15 : 30,557.43 = 12,714.75 : x
  2. Step 2: Convert to fraction form
    22,143.15/30,557.43 = 12,714.75/x
  3. Step 3: Cross multiply
    22,143.15x = 30,557.43 × 12,714.75
  4. Step 4: Simplify right side
    22,143.15x = 388,530,083.09
  5. Step 5: Solve for x
    x = 388,530,083.09/22,143.15
  6. Step 6: Final answer
    x = 17,546.29

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.