Home / 13,188.10-19,781.36-3,327.34

Finding the Fourth Proportional to 13,188.10, 19,781.36 and 3,327.34

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Solution

The fourth proportional to 13,188.10, 19,781.36 and 3,327.34 is: 4,990.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.10 : 19,781.36 = 3,327.34 : x
  2. Step 2: Convert to fraction form
    13,188.10/19,781.36 = 3,327.34/x
  3. Step 3: Cross multiply
    13,188.10x = 19,781.36 × 3,327.34
  4. Step 4: Simplify right side
    13,188.10x = 65,819,310.38
  5. Step 5: Solve for x
    x = 65,819,310.38/13,188.10
  6. Step 6: Final answer
    x = 4,990.81

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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.