Home / 13,119.60-19,679.40-8,194.80

Finding the Fourth Proportional to 13,119.60, 19,679.40 and 8,194.80

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Solution

The fourth proportional to 13,119.60, 19,679.40 and 8,194.80 is: 12,292.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.60 : 19,679.40 = 8,194.80 : x
  2. Step 2: Convert to fraction form
    13,119.60/19,679.40 = 8,194.80/x
  3. Step 3: Cross multiply
    13,119.60x = 19,679.40 × 8,194.80
  4. Step 4: Simplify right side
    13,119.60x = 161,268,747.12
  5. Step 5: Solve for x
    x = 161,268,747.12/13,119.60
  6. Step 6: Final answer
    x = 12,292.20

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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.