Home / 21,272.74-29,356.14-11,712.43

Finding the Fourth Proportional to 21,272.74, 29,356.14 and 11,712.43

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Solution

The fourth proportional to 21,272.74, 29,356.14 and 11,712.43 is: 16,163.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.74 : 29,356.14 = 11,712.43 : x
  2. Step 2: Convert to fraction form
    21,272.74/29,356.14 = 11,712.43/x
  3. Step 3: Cross multiply
    21,272.74x = 29,356.14 × 11,712.43
  4. Step 4: Simplify right side
    21,272.74x = 343,831,772.74
  5. Step 5: Solve for x
    x = 343,831,772.74/21,272.74
  6. Step 6: Final answer
    x = 16,163.02

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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.