Home / 13,287.25-18,335.03-8,181.95

Finding the Fourth Proportional to 13,287.25, 18,335.03 and 8,181.95

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Solution

The fourth proportional to 13,287.25, 18,335.03 and 8,181.95 is: 11,290.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.25 : 18,335.03 = 8,181.95 : x
  2. Step 2: Convert to fraction form
    13,287.25/18,335.03 = 8,181.95/x
  3. Step 3: Cross multiply
    13,287.25x = 18,335.03 × 8,181.95
  4. Step 4: Simplify right side
    13,287.25x = 150,016,365.00
  5. Step 5: Solve for x
    x = 150,016,365.00/13,287.25
  6. Step 6: Final answer
    x = 11,290.25

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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.