Home / 22,172.72-33,239.30-8,129.47

Finding the Fourth Proportional to 22,172.72, 33,239.30 and 8,129.47

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Solution

The fourth proportional to 22,172.72, 33,239.30 and 8,129.47 is: 12,186.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,172.72 : 33,239.30 = 8,129.47 : x
  2. Step 2: Convert to fraction form
    22,172.72/33,239.30 = 8,129.47/x
  3. Step 3: Cross multiply
    22,172.72x = 33,239.30 × 8,129.47
  4. Step 4: Simplify right side
    22,172.72x = 270,217,685.33
  5. Step 5: Solve for x
    x = 270,217,685.33/22,172.72
  6. Step 6: Final answer
    x = 12,186.94

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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.