Home / 21,531.92-29,712.57-12,101.90

Finding the Fourth Proportional to 21,531.92, 29,712.57 and 12,101.90

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Solution

The fourth proportional to 21,531.92, 29,712.57 and 12,101.90 is: 16,699.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.92 : 29,712.57 = 12,101.90 : x
  2. Step 2: Convert to fraction form
    21,531.92/29,712.57 = 12,101.90/x
  3. Step 3: Cross multiply
    21,531.92x = 29,712.57 × 12,101.90
  4. Step 4: Simplify right side
    21,531.92x = 359,578,550.88
  5. Step 5: Solve for x
    x = 359,578,550.88/21,531.92
  6. Step 6: Final answer
    x = 16,699.79

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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.