Home / 20,757.52-31,135.20-6,717.32

Finding the Fourth Proportional to 20,757.52, 31,135.20 and 6,717.32

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Solution

The fourth proportional to 20,757.52, 31,135.20 and 6,717.32 is: 10,075.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.52 : 31,135.20 = 6,717.32 : x
  2. Step 2: Convert to fraction form
    20,757.52/31,135.20 = 6,717.32/x
  3. Step 3: Cross multiply
    20,757.52x = 31,135.20 × 6,717.32
  4. Step 4: Simplify right side
    20,757.52x = 209,145,101.66
  5. Step 5: Solve for x
    x = 209,145,101.66/20,757.52
  6. Step 6: Final answer
    x = 10,075.63

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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.