Home / 21,329.98-31,969.03-15,091.79

Finding the Fourth Proportional to 21,329.98, 31,969.03 and 15,091.79

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Solution

The fourth proportional to 21,329.98, 31,969.03 and 15,091.79 is: 22,619.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.98 : 31,969.03 = 15,091.79 : x
  2. Step 2: Convert to fraction form
    21,329.98/31,969.03 = 15,091.79/x
  3. Step 3: Cross multiply
    21,329.98x = 31,969.03 × 15,091.79
  4. Step 4: Simplify right side
    21,329.98x = 482,469,887.26
  5. Step 5: Solve for x
    x = 482,469,887.26/21,329.98
  6. Step 6: Final answer
    x = 22,619.33

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1.5x scale

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.