Home / 13,324.22-18,388.38-7,659.89

Finding the Fourth Proportional to 13,324.22, 18,388.38 and 7,659.89

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Solution

The fourth proportional to 13,324.22, 18,388.38 and 7,659.89 is: 10,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,324.22 : 18,388.38 = 7,659.89 : x
  2. Step 2: Convert to fraction form
    13,324.22/18,388.38 = 7,659.89/x
  3. Step 3: Cross multiply
    13,324.22x = 18,388.38 × 7,659.89
  4. Step 4: Simplify right side
    13,324.22x = 140,852,968.08
  5. Step 5: Solve for x
    x = 140,852,968.08/13,324.22
  6. Step 6: Final answer
    x = 10,571.20

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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.