Home / 21,234.57-29,298.94-12,850.89

Finding the Fourth Proportional to 21,234.57, 29,298.94 and 12,850.89

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Solution

The fourth proportional to 21,234.57, 29,298.94 and 12,850.89 is: 17,731.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,234.57 : 29,298.94 = 12,850.89 : x
  2. Step 2: Convert to fraction form
    21,234.57/29,298.94 = 12,850.89/x
  3. Step 3: Cross multiply
    21,234.57x = 29,298.94 × 12,850.89
  4. Step 4: Simplify right side
    21,234.57x = 376,517,455.06
  5. Step 5: Solve for x
    x = 376,517,455.06/21,234.57
  6. Step 6: Final answer
    x = 17,731.34

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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.