Home / 12,639.66-18,963.14-3,875.87

Finding the Fourth Proportional to 12,639.66, 18,963.14 and 3,875.87

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Solution

The fourth proportional to 12,639.66, 18,963.14 and 3,875.87 is: 5,814.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.66 : 18,963.14 = 3,875.87 : x
  2. Step 2: Convert to fraction form
    12,639.66/18,963.14 = 3,875.87/x
  3. Step 3: Cross multiply
    12,639.66x = 18,963.14 × 3,875.87
  4. Step 4: Simplify right side
    12,639.66x = 73,498,551.24
  5. Step 5: Solve for x
    x = 73,498,551.24/12,639.66
  6. Step 6: Final answer
    x = 5,814.92

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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.