Home / 13,309.80-19,971.72-10,187.88

Finding the Fourth Proportional to 13,309.80, 19,971.72 and 10,187.88

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Solution

The fourth proportional to 13,309.80, 19,971.72 and 10,187.88 is: 15,287.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.80 : 19,971.72 = 10,187.88 : x
  2. Step 2: Convert to fraction form
    13,309.80/19,971.72 = 10,187.88/x
  3. Step 3: Cross multiply
    13,309.80x = 19,971.72 × 10,187.88
  4. Step 4: Simplify right side
    13,309.80x = 203,469,486.75
  5. Step 5: Solve for x
    x = 203,469,486.75/13,309.80
  6. Step 6: Final answer
    x = 15,287.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.