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Finding the Fourth Proportional to 21,297.92, 29,391.25 and 12,350.73

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Solution

The fourth proportional to 21,297.92, 29,391.25 and 12,350.73 is: 17,044.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.92 : 29,391.25 = 12,350.73 : x
  2. Step 2: Convert to fraction form
    21,297.92/29,391.25 = 12,350.73/x
  3. Step 3: Cross multiply
    21,297.92x = 29,391.25 × 12,350.73
  4. Step 4: Simplify right side
    21,297.92x = 363,003,495.61
  5. Step 5: Solve for x
    x = 363,003,495.61/21,297.92
  6. Step 6: Final answer
    x = 17,044.08

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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.