Home / 13,198.95-18,215.01-7,231.14

Finding the Fourth Proportional to 13,198.95, 18,215.01 and 7,231.14

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Solution

The fourth proportional to 13,198.95, 18,215.01 and 7,231.14 is: 9,979.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.95 : 18,215.01 = 7,231.14 : x
  2. Step 2: Convert to fraction form
    13,198.95/18,215.01 = 7,231.14/x
  3. Step 3: Cross multiply
    13,198.95x = 18,215.01 × 7,231.14
  4. Step 4: Simplify right side
    13,198.95x = 131,715,287.41
  5. Step 5: Solve for x
    x = 131,715,287.41/13,198.95
  6. Step 6: Final answer
    x = 9,979.22

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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.