Home / 30,979.95-46,471.71-8,791.59

Finding the Fourth Proportional to 30,979.95, 46,471.71 and 8,791.59

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Solution

The fourth proportional to 30,979.95, 46,471.71 and 8,791.59 is: 13,187.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.95 : 46,471.71 = 8,791.59 : x
  2. Step 2: Convert to fraction form
    30,979.95/46,471.71 = 8,791.59/x
  3. Step 3: Cross multiply
    30,979.95x = 46,471.71 × 8,791.59
  4. Step 4: Simplify right side
    30,979.95x = 408,560,220.92
  5. Step 5: Solve for x
    x = 408,560,220.92/30,979.95
  6. Step 6: Final answer
    x = 13,187.89

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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.