Home / 21,400.44-32,100.68-20,099.90

Finding the Fourth Proportional to 21,400.44, 32,100.68 and 20,099.90

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Solution

The fourth proportional to 21,400.44, 32,100.68 and 20,099.90 is: 30,149.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.44 : 32,100.68 = 20,099.90 : x
  2. Step 2: Convert to fraction form
    21,400.44/32,100.68 = 20,099.90/x
  3. Step 3: Cross multiply
    21,400.44x = 32,100.68 × 20,099.90
  4. Step 4: Simplify right side
    21,400.44x = 645,220,351.34
  5. Step 5: Solve for x
    x = 645,220,351.34/21,400.44
  6. Step 6: Final answer
    x = 30,149.86

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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.