Home / 21,006.73-28,989.19-11,447.18

Finding the Fourth Proportional to 21,006.73, 28,989.19 and 11,447.18

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Solution

The fourth proportional to 21,006.73, 28,989.19 and 11,447.18 is: 15,797.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.73 : 28,989.19 = 11,447.18 : x
  2. Step 2: Convert to fraction form
    21,006.73/28,989.19 = 11,447.18/x
  3. Step 3: Cross multiply
    21,006.73x = 28,989.19 × 11,447.18
  4. Step 4: Simplify right side
    21,006.73x = 331,844,475.98
  5. Step 5: Solve for x
    x = 331,844,475.98/21,006.73
  6. Step 6: Final answer
    x = 15,797.06

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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.