Home / 9,936.12-13,681.80-9,717.42

Finding the Fourth Proportional to 9,936.12, 13,681.80 and 9,717.42

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Solution

The fourth proportional to 9,936.12, 13,681.80 and 9,717.42 is: 13,380.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,936.12 : 13,681.80 = 9,717.42 : x
  2. Step 2: Convert to fraction form
    9,936.12/13,681.80 = 9,717.42/x
  3. Step 3: Cross multiply
    9,936.12x = 13,681.80 × 9,717.42
  4. Step 4: Simplify right side
    9,936.12x = 132,951,796.96
  5. Step 5: Solve for x
    x = 132,951,796.96/9,936.12
  6. Step 6: Final answer
    x = 13,380.66

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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.