Home / 13,617.72-18,789.14-7,949.24

Finding the Fourth Proportional to 13,617.72, 18,789.14 and 7,949.24

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Solution

The fourth proportional to 13,617.72, 18,789.14 and 7,949.24 is: 10,968.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.72 : 18,789.14 = 7,949.24 : x
  2. Step 2: Convert to fraction form
    13,617.72/18,789.14 = 7,949.24/x
  3. Step 3: Cross multiply
    13,617.72x = 18,789.14 × 7,949.24
  4. Step 4: Simplify right side
    13,617.72x = 149,359,357.28
  5. Step 5: Solve for x
    x = 149,359,357.28/13,617.72
  6. Step 6: Final answer
    x = 10,968.02

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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.