Home / 13,319.33-18,380.84-7,351.20

Finding the Fourth Proportional to 13,319.33, 18,380.84 and 7,351.20

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Solution

The fourth proportional to 13,319.33, 18,380.84 and 7,351.20 is: 10,144.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.33 : 18,380.84 = 7,351.20 : x
  2. Step 2: Convert to fraction form
    13,319.33/18,380.84 = 7,351.20/x
  3. Step 3: Cross multiply
    13,319.33x = 18,380.84 × 7,351.20
  4. Step 4: Simplify right side
    13,319.33x = 135,121,194.25
  5. Step 5: Solve for x
    x = 135,121,194.25/13,319.33
  6. Step 6: Final answer
    x = 10,144.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.