Home / 13,929.44-20,902.32-5,170.52

Finding the Fourth Proportional to 13,929.44, 20,902.32 and 5,170.52

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Solution

The fourth proportional to 13,929.44, 20,902.32 and 5,170.52 is: 7,758.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.44 : 20,902.32 = 5,170.52 : x
  2. Step 2: Convert to fraction form
    13,929.44/20,902.32 = 5,170.52/x
  3. Step 3: Cross multiply
    13,929.44x = 20,902.32 × 5,170.52
  4. Step 4: Simplify right side
    13,929.44x = 108,075,863.61
  5. Step 5: Solve for x
    x = 108,075,863.61/13,929.44
  6. Step 6: Final answer
    x = 7,758.81

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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.