Home / 13,251.60-19,877.26-3,390.80

Finding the Fourth Proportional to 13,251.60, 19,877.26 and 3,390.80

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Solution

The fourth proportional to 13,251.60, 19,877.26 and 3,390.80 is: 5,086.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.60 : 19,877.26 = 3,390.80 : x
  2. Step 2: Convert to fraction form
    13,251.60/19,877.26 = 3,390.80/x
  3. Step 3: Cross multiply
    13,251.60x = 19,877.26 × 3,390.80
  4. Step 4: Simplify right side
    13,251.60x = 67,399,813.21
  5. Step 5: Solve for x
    x = 67,399,813.21/13,251.60
  6. Step 6: Final answer
    x = 5,086.16

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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.