Home / 21,363.20-32,006.40-18,905.60

Finding the Fourth Proportional to 21,363.20, 32,006.40 and 18,905.60

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Solution

The fourth proportional to 21,363.20, 32,006.40 and 18,905.60 is: 28,324.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,363.20 : 32,006.40 = 18,905.60 : x
  2. Step 2: Convert to fraction form
    21,363.20/32,006.40 = 18,905.60/x
  3. Step 3: Cross multiply
    21,363.20x = 32,006.40 × 18,905.60
  4. Step 4: Simplify right side
    21,363.20x = 605,100,195.84
  5. Step 5: Solve for x
    x = 605,100,195.84/21,363.20
  6. Step 6: Final answer
    x = 28,324.42

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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.