Home / 11,869.80-17,805.12-4,078.56

Finding the Fourth Proportional to 11,869.80, 17,805.12 and 4,078.56

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Solution

The fourth proportional to 11,869.80, 17,805.12 and 4,078.56 is: 6,117.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.80 : 17,805.12 = 4,078.56 : x
  2. Step 2: Convert to fraction form
    11,869.80/17,805.12 = 4,078.56/x
  3. Step 3: Cross multiply
    11,869.80x = 17,805.12 × 4,078.56
  4. Step 4: Simplify right side
    11,869.80x = 72,619,250.23
  5. Step 5: Solve for x
    x = 72,619,250.23/11,869.80
  6. Step 6: Final answer
    x = 6,117.98

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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.