Home / 20,114.78-30,153.48-10,761.25

Finding the Fourth Proportional to 20,114.78, 30,153.48 and 10,761.25

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Solution

The fourth proportional to 20,114.78, 30,153.48 and 10,761.25 is: 16,131.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114.78 : 30,153.48 = 10,761.25 : x
  2. Step 2: Convert to fraction form
    20,114.78/30,153.48 = 10,761.25/x
  3. Step 3: Cross multiply
    20,114.78x = 30,153.48 × 10,761.25
  4. Step 4: Simplify right side
    20,114.78x = 324,488,932.08
  5. Step 5: Solve for x
    x = 324,488,932.08/20,114.78
  6. Step 6: Final answer
    x = 16,131.87

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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.