Home / 21,195.88-29,247.78-11,763.16

Finding the Fourth Proportional to 21,195.88, 29,247.78 and 11,763.16

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Solution

The fourth proportional to 21,195.88, 29,247.78 and 11,763.16 is: 16,231.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.88 : 29,247.78 = 11,763.16 : x
  2. Step 2: Convert to fraction form
    21,195.88/29,247.78 = 11,763.16/x
  3. Step 3: Cross multiply
    21,195.88x = 29,247.78 × 11,763.16
  4. Step 4: Simplify right side
    21,195.88x = 344,046,315.78
  5. Step 5: Solve for x
    x = 344,046,315.78/21,195.88
  6. Step 6: Final answer
    x = 16,231.75

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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.