Home / 12,639.66-18,952.65-3,872.94

Finding the Fourth Proportional to 12,639.66, 18,952.65 and 3,872.94

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Solution

The fourth proportional to 12,639.66, 18,952.65 and 3,872.94 is: 5,807.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.66 : 18,952.65 = 3,872.94 : x
  2. Step 2: Convert to fraction form
    12,639.66/18,952.65 = 3,872.94/x
  3. Step 3: Cross multiply
    12,639.66x = 18,952.65 × 3,872.94
  4. Step 4: Simplify right side
    12,639.66x = 73,402,476.29
  5. Step 5: Solve for x
    x = 73,402,476.29/12,639.66
  6. Step 6: Final answer
    x = 5,807.31

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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.