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Finding the Fourth Proportional to 15,233.80, 22,812.30 and 12,161.80

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Solution

The fourth proportional to 15,233.80, 22,812.30 and 12,161.80 is: 18,212.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,233.80 : 22,812.30 = 12,161.80 : x
  2. Step 2: Convert to fraction form
    15,233.80/22,812.30 = 12,161.80/x
  3. Step 3: Cross multiply
    15,233.80x = 22,812.30 × 12,161.80
  4. Step 4: Simplify right side
    15,233.80x = 277,438,630.14
  5. Step 5: Solve for x
    x = 277,438,630.14/15,233.80
  6. Step 6: Final answer
    x = 18,212.04

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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.