Home / 21,847.20-32,857.20-19,600.80

Finding the Fourth Proportional to 21,847.20, 32,857.20 and 19,600.80

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Solution

The fourth proportional to 21,847.20, 32,857.20 and 19,600.80 is: 29,478.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,847.20 : 32,857.20 = 19,600.80 : x
  2. Step 2: Convert to fraction form
    21,847.20/32,857.20 = 19,600.80/x
  3. Step 3: Cross multiply
    21,847.20x = 32,857.20 × 19,600.80
  4. Step 4: Simplify right side
    21,847.20x = 644,027,405.76
  5. Step 5: Solve for x
    x = 644,027,405.76/21,847.20
  6. Step 6: Final answer
    x = 29,478.72

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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.