Home / 13,910.81-19,186.44-9,661.88

Finding the Fourth Proportional to 13,910.81, 19,186.44 and 9,661.88

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Solution

The fourth proportional to 13,910.81, 19,186.44 and 9,661.88 is: 13,326.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.81 : 19,186.44 = 9,661.88 : x
  2. Step 2: Convert to fraction form
    13,910.81/19,186.44 = 9,661.88/x
  3. Step 3: Cross multiply
    13,910.81x = 19,186.44 × 9,661.88
  4. Step 4: Simplify right side
    13,910.81x = 185,376,984.98
  5. Step 5: Solve for x
    x = 185,376,984.98/13,910.81
  6. Step 6: Final answer
    x = 13,326.11

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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.