Home / 12,639.24-18,959.13-3,873.96

Finding the Fourth Proportional to 12,639.24, 18,959.13 and 3,873.96

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Solution

The fourth proportional to 12,639.24, 18,959.13 and 3,873.96 is: 5,811.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.24 : 18,959.13 = 3,873.96 : x
  2. Step 2: Convert to fraction form
    12,639.24/18,959.13 = 3,873.96/x
  3. Step 3: Cross multiply
    12,639.24x = 18,959.13 × 3,873.96
  4. Step 4: Simplify right side
    12,639.24x = 73,446,911.25
  5. Step 5: Solve for x
    x = 73,446,911.25/12,639.24
  6. Step 6: Final answer
    x = 5,811.02

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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.