Home / 12,579.11-18,868.47-3,219.05

Finding the Fourth Proportional to 12,579.11, 18,868.47 and 3,219.05

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Solution

The fourth proportional to 12,579.11, 18,868.47 and 3,219.05 is: 4,828.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.11 : 18,868.47 = 3,219.05 : x
  2. Step 2: Convert to fraction form
    12,579.11/18,868.47 = 3,219.05/x
  3. Step 3: Cross multiply
    12,579.11x = 18,868.47 × 3,219.05
  4. Step 4: Simplify right side
    12,579.11x = 60,738,595.52
  5. Step 5: Solve for x
    x = 60,738,595.52/12,579.11
  6. Step 6: Final answer
    x = 4,828.53

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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.