Home / 13,170.53-19,766.88-5,278.59

Finding the Fourth Proportional to 13,170.53, 19,766.88 and 5,278.59

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Solution

The fourth proportional to 13,170.53, 19,766.88 and 5,278.59 is: 7,922.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.53 : 19,766.88 = 5,278.59 : x
  2. Step 2: Convert to fraction form
    13,170.53/19,766.88 = 5,278.59/x
  3. Step 3: Cross multiply
    13,170.53x = 19,766.88 × 5,278.59
  4. Step 4: Simplify right side
    13,170.53x = 104,341,255.10
  5. Step 5: Solve for x
    x = 104,341,255.10/13,170.53
  6. Step 6: Final answer
    x = 7,922.33

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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.