Home / 20,172.92-27,841.20-12,215.48

Finding the Fourth Proportional to 20,172.92, 27,841.20 and 12,215.48

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Solution

The fourth proportional to 20,172.92, 27,841.20 and 12,215.48 is: 16,858.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.92 : 27,841.20 = 12,215.48 : x
  2. Step 2: Convert to fraction form
    20,172.92/27,841.20 = 12,215.48/x
  3. Step 3: Cross multiply
    20,172.92x = 27,841.20 × 12,215.48
  4. Step 4: Simplify right side
    20,172.92x = 340,093,621.78
  5. Step 5: Solve for x
    x = 340,093,621.78/20,172.92
  6. Step 6: Final answer
    x = 16,858.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.