Home / 21,414.30-32,121.45-18,133.80

Finding the Fourth Proportional to 21,414.30, 32,121.45 and 18,133.80

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Solution

The fourth proportional to 21,414.30, 32,121.45 and 18,133.80 is: 27,200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,414.30 : 32,121.45 = 18,133.80 : x
  2. Step 2: Convert to fraction form
    21,414.30/32,121.45 = 18,133.80/x
  3. Step 3: Cross multiply
    21,414.30x = 32,121.45 × 18,133.80
  4. Step 4: Simplify right side
    21,414.30x = 582,483,950.01
  5. Step 5: Solve for x
    x = 582,483,950.01/21,414.30
  6. Step 6: Final answer
    x = 27,200.70

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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.