Home / 12,579.13-18,871.40-3,814.75

Finding the Fourth Proportional to 12,579.13, 18,871.40 and 3,814.75

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Solution

The fourth proportional to 12,579.13, 18,871.40 and 3,814.75 is: 5,722.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.13 : 18,871.40 = 3,814.75 : x
  2. Step 2: Convert to fraction form
    12,579.13/18,871.40 = 3,814.75/x
  3. Step 3: Cross multiply
    12,579.13x = 18,871.40 × 3,814.75
  4. Step 4: Simplify right side
    12,579.13x = 71,989,673.15
  5. Step 5: Solve for x
    x = 71,989,673.15/12,579.13
  6. Step 6: Final answer
    x = 5,722.95

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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.