Home / 13,429.24-18,540.75-8,651.56

Finding the Fourth Proportional to 13,429.24, 18,540.75 and 8,651.56

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Solution

The fourth proportional to 13,429.24, 18,540.75 and 8,651.56 is: 11,944.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.24 : 18,540.75 = 8,651.56 : x
  2. Step 2: Convert to fraction form
    13,429.24/18,540.75 = 8,651.56/x
  3. Step 3: Cross multiply
    13,429.24x = 18,540.75 × 8,651.56
  4. Step 4: Simplify right side
    13,429.24x = 160,406,383.26
  5. Step 5: Solve for x
    x = 160,406,383.26/13,429.24
  6. Step 6: Final answer
    x = 11,944.56

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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.