Home / 11,818.47-17,723.30-3,919.53

Finding the Fourth Proportional to 11,818.47, 17,723.30 and 3,919.53

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Solution

The fourth proportional to 11,818.47, 17,723.30 and 3,919.53 is: 5,877.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,818.47 : 17,723.30 = 3,919.53 : x
  2. Step 2: Convert to fraction form
    11,818.47/17,723.30 = 3,919.53/x
  3. Step 3: Cross multiply
    11,818.47x = 17,723.30 × 3,919.53
  4. Step 4: Simplify right side
    11,818.47x = 69,466,986.45
  5. Step 5: Solve for x
    x = 69,466,986.45/11,818.47
  6. Step 6: Final answer
    x = 5,877.83

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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.