Home / 21,862.12-32,825.98-12,512.70

Finding the Fourth Proportional to 21,862.12, 32,825.98 and 12,512.70

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Solution

The fourth proportional to 21,862.12, 32,825.98 and 12,512.70 is: 18,787.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.12 : 32,825.98 = 12,512.70 : x
  2. Step 2: Convert to fraction form
    21,862.12/32,825.98 = 12,512.70/x
  3. Step 3: Cross multiply
    21,862.12x = 32,825.98 × 12,512.70
  4. Step 4: Simplify right side
    21,862.12x = 410,741,639.95
  5. Step 5: Solve for x
    x = 410,741,639.95/21,862.12
  6. Step 6: Final answer
    x = 18,787.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.