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Finding the Fourth Proportional to 21,850.92, 32,737.48 and 9,172.80

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Solution

The fourth proportional to 21,850.92, 32,737.48 and 9,172.80 is: 13,742.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,850.92 : 32,737.48 = 9,172.80 : x
  2. Step 2: Convert to fraction form
    21,850.92/32,737.48 = 9,172.80/x
  3. Step 3: Cross multiply
    21,850.92x = 32,737.48 × 9,172.80
  4. Step 4: Simplify right side
    21,850.92x = 300,294,356.54
  5. Step 5: Solve for x
    x = 300,294,356.54/21,850.92
  6. Step 6: Final answer
    x = 13,742.87

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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.