Home / 21,490.80-32,236.20-16,825.20

Finding the Fourth Proportional to 21,490.80, 32,236.20 and 16,825.20

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Solution

The fourth proportional to 21,490.80, 32,236.20 and 16,825.20 is: 25,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,490.80 : 32,236.20 = 16,825.20 : x
  2. Step 2: Convert to fraction form
    21,490.80/32,236.20 = 16,825.20/x
  3. Step 3: Cross multiply
    21,490.80x = 32,236.20 × 16,825.20
  4. Step 4: Simplify right side
    21,490.80x = 542,380,512.24
  5. Step 5: Solve for x
    x = 542,380,512.24/21,490.80
  6. Step 6: Final answer
    x = 25,237.80

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1.5x scale

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.