Home / 39,185.10-58,781.75-12,891.92

Finding the Fourth Proportional to 39,185.10, 58,781.75 and 12,891.92

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Solution

The fourth proportional to 39,185.10, 58,781.75 and 12,891.92 is: 19,339.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,185.10 : 58,781.75 = 12,891.92 : x
  2. Step 2: Convert to fraction form
    39,185.10/58,781.75 = 12,891.92/x
  3. Step 3: Cross multiply
    39,185.10x = 58,781.75 × 12,891.92
  4. Step 4: Simplify right side
    39,185.10x = 757,809,260.09
  5. Step 5: Solve for x
    x = 757,809,260.09/39,185.10
  6. Step 6: Final answer
    x = 19,339.22

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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.