Home / 20,126.25-27,775.44-12,170.43

Finding the Fourth Proportional to 20,126.25, 27,775.44 and 12,170.43

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Solution

The fourth proportional to 20,126.25, 27,775.44 and 12,170.43 is: 16,795.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.25 : 27,775.44 = 12,170.43 : x
  2. Step 2: Convert to fraction form
    20,126.25/27,775.44 = 12,170.43/x
  3. Step 3: Cross multiply
    20,126.25x = 27,775.44 × 12,170.43
  4. Step 4: Simplify right side
    20,126.25x = 338,039,048.24
  5. Step 5: Solve for x
    x = 338,039,048.24/20,126.25
  6. Step 6: Final answer
    x = 16,795.93

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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.