Home / 20,143.16-27,793.08-12,185.22

Finding the Fourth Proportional to 20,143.16, 27,793.08 and 12,185.22

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Solution

The fourth proportional to 20,143.16, 27,793.08 and 12,185.22 is: 16,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.16 : 27,793.08 = 12,185.22 : x
  2. Step 2: Convert to fraction form
    20,143.16/27,793.08 = 12,185.22/x
  3. Step 3: Cross multiply
    20,143.16x = 27,793.08 × 12,185.22
  4. Step 4: Simplify right side
    20,143.16x = 338,664,794.28
  5. Step 5: Solve for x
    x = 338,664,794.28/20,143.16
  6. Step 6: Final answer
    x = 16,812.90

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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.