Home / 31,178.20-46,761.69-8,986.13

Finding the Fourth Proportional to 31,178.20, 46,761.69 and 8,986.13

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Solution

The fourth proportional to 31,178.20, 46,761.69 and 8,986.13 is: 13,477.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,178.20 : 46,761.69 = 8,986.13 : x
  2. Step 2: Convert to fraction form
    31,178.20/46,761.69 = 8,986.13/x
  3. Step 3: Cross multiply
    31,178.20x = 46,761.69 × 8,986.13
  4. Step 4: Simplify right side
    31,178.20x = 420,206,625.36
  5. Step 5: Solve for x
    x = 420,206,625.36/31,178.20
  6. Step 6: Final answer
    x = 13,477.58

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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.