Home / 21,022.25-29,010.92-11,591.15

Finding the Fourth Proportional to 21,022.25, 29,010.92 and 11,591.15

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Solution

The fourth proportional to 21,022.25, 29,010.92 and 11,591.15 is: 15,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022.25 : 29,010.92 = 11,591.15 : x
  2. Step 2: Convert to fraction form
    21,022.25/29,010.92 = 11,591.15/x
  3. Step 3: Cross multiply
    21,022.25x = 29,010.92 × 11,591.15
  4. Step 4: Simplify right side
    21,022.25x = 336,269,722.35
  5. Step 5: Solve for x
    x = 336,269,722.35/21,022.25
  6. Step 6: Final answer
    x = 15,995.90

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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.