Home / 22,560.75-31,137.12-12,998.76

Finding the Fourth Proportional to 22,560.75, 31,137.12 and 12,998.76

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Solution

The fourth proportional to 22,560.75, 31,137.12 and 12,998.76 is: 17,940.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,560.75 : 31,137.12 = 12,998.76 : x
  2. Step 2: Convert to fraction form
    22,560.75/31,137.12 = 12,998.76/x
  3. Step 3: Cross multiply
    22,560.75x = 31,137.12 × 12,998.76
  4. Step 4: Simplify right side
    22,560.75x = 404,743,949.97
  5. Step 5: Solve for x
    x = 404,743,949.97/22,560.75
  6. Step 6: Final answer
    x = 17,940.18

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Half scale
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Double scale
Find fourth proportional to 22,561.75, 31,138.50 and 12,999.76
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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.