Home / 13,489.20-20,190.60-7,233.84

Finding the Fourth Proportional to 13,489.20, 20,190.60 and 7,233.84

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Solution

The fourth proportional to 13,489.20, 20,190.60 and 7,233.84 is: 10,827.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.20 : 20,190.60 = 7,233.84 : x
  2. Step 2: Convert to fraction form
    13,489.20/20,190.60 = 7,233.84/x
  3. Step 3: Cross multiply
    13,489.20x = 20,190.60 × 7,233.84
  4. Step 4: Simplify right side
    13,489.20x = 146,055,569.90
  5. Step 5: Solve for x
    x = 146,055,569.90/13,489.20
  6. Step 6: Final answer
    x = 10,827.59

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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.