Home / 13,015.72-17,963.46-7,982.92

Finding the Fourth Proportional to 13,015.72, 17,963.46 and 7,982.92

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Solution

The fourth proportional to 13,015.72, 17,963.46 and 7,982.92 is: 11,017.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.72 : 17,963.46 = 7,982.92 : x
  2. Step 2: Convert to fraction form
    13,015.72/17,963.46 = 7,982.92/x
  3. Step 3: Cross multiply
    13,015.72x = 17,963.46 × 7,982.92
  4. Step 4: Simplify right side
    13,015.72x = 143,400,864.10
  5. Step 5: Solve for x
    x = 143,400,864.10/13,015.72
  6. Step 6: Final answer
    x = 11,017.51

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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.