Home / 13,118.80-18,104.30-7,150.56

Finding the Fourth Proportional to 13,118.80, 18,104.30 and 7,150.56

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Solution

The fourth proportional to 13,118.80, 18,104.30 and 7,150.56 is: 9,867.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.80 : 18,104.30 = 7,150.56 : x
  2. Step 2: Convert to fraction form
    13,118.80/18,104.30 = 7,150.56/x
  3. Step 3: Cross multiply
    13,118.80x = 18,104.30 × 7,150.56
  4. Step 4: Simplify right side
    13,118.80x = 129,455,883.41
  5. Step 5: Solve for x
    x = 129,455,883.41/13,118.80
  6. Step 6: Final answer
    x = 9,867.97

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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.