Home / 21,531.58-29,713.92-12,100.14

Finding the Fourth Proportional to 21,531.58, 29,713.92 and 12,100.14

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Solution

The fourth proportional to 21,531.58, 29,713.92 and 12,100.14 is: 16,698.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.58 : 29,713.92 = 12,100.14 : x
  2. Step 2: Convert to fraction form
    21,531.58/29,713.92 = 12,100.14/x
  3. Step 3: Cross multiply
    21,531.58x = 29,713.92 × 12,100.14
  4. Step 4: Simplify right side
    21,531.58x = 359,542,591.95
  5. Step 5: Solve for x
    x = 359,542,591.95/21,531.58
  6. Step 6: Final answer
    x = 16,698.38

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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.