Home / 21,850.40-32,743.20-18,545.60

Finding the Fourth Proportional to 21,850.40, 32,743.20 and 18,545.60

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Solution

The fourth proportional to 21,850.40, 32,743.20 and 18,545.60 is: 27,790.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,850.40 : 32,743.20 = 18,545.60 : x
  2. Step 2: Convert to fraction form
    21,850.40/32,743.20 = 18,545.60/x
  3. Step 3: Cross multiply
    21,850.40x = 32,743.20 × 18,545.60
  4. Step 4: Simplify right side
    21,850.40x = 607,242,289.92
  5. Step 5: Solve for x
    x = 607,242,289.92/21,850.40
  6. Step 6: Final answer
    x = 27,790.90

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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.