Home / 13,228.05-18,255.54-8,744.03

Finding the Fourth Proportional to 13,228.05, 18,255.54 and 8,744.03

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Solution

The fourth proportional to 13,228.05, 18,255.54 and 8,744.03 is: 12,067.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.05 : 18,255.54 = 8,744.03 : x
  2. Step 2: Convert to fraction form
    13,228.05/18,255.54 = 8,744.03/x
  3. Step 3: Cross multiply
    13,228.05x = 18,255.54 × 8,744.03
  4. Step 4: Simplify right side
    13,228.05x = 159,626,933.82
  5. Step 5: Solve for x
    x = 159,626,933.82/13,228.05
  6. Step 6: Final answer
    x = 12,067.30

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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.