Home / 21,191.14-29,243.79-11,759.71

Finding the Fourth Proportional to 21,191.14, 29,243.79 and 11,759.71

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Solution

The fourth proportional to 21,191.14, 29,243.79 and 11,759.71 is: 16,228.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.14 : 29,243.79 = 11,759.71 : x
  2. Step 2: Convert to fraction form
    21,191.14/29,243.79 = 11,759.71/x
  3. Step 3: Cross multiply
    21,191.14x = 29,243.79 × 11,759.71
  4. Step 4: Simplify right side
    21,191.14x = 343,898,489.70
  5. Step 5: Solve for x
    x = 343,898,489.70/21,191.14
  6. Step 6: Final answer
    x = 16,228.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.