Home / 11,679.47-17,508.79-4,282.20

Finding the Fourth Proportional to 11,679.47, 17,508.79 and 4,282.20

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Solution

The fourth proportional to 11,679.47, 17,508.79 and 4,282.20 is: 6,419.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,679.47 : 17,508.79 = 4,282.20 : x
  2. Step 2: Convert to fraction form
    11,679.47/17,508.79 = 4,282.20/x
  3. Step 3: Cross multiply
    11,679.47x = 17,508.79 × 4,282.20
  4. Step 4: Simplify right side
    11,679.47x = 74,976,140.54
  5. Step 5: Solve for x
    x = 74,976,140.54/11,679.47
  6. Step 6: Final answer
    x = 6,419.48

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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.