Home / 11,871.36-17,806.08-2,986.56

Finding the Fourth Proportional to 11,871.36, 17,806.08 and 2,986.56

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Solution

The fourth proportional to 11,871.36, 17,806.08 and 2,986.56 is: 4,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,871.36 : 17,806.08 = 2,986.56 : x
  2. Step 2: Convert to fraction form
    11,871.36/17,806.08 = 2,986.56/x
  3. Step 3: Cross multiply
    11,871.36x = 17,806.08 × 2,986.56
  4. Step 4: Simplify right side
    11,871.36x = 53,178,926.28
  5. Step 5: Solve for x
    x = 53,178,926.28/11,871.36
  6. Step 6: Final answer
    x = 4,479.60

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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.