Home / 21,144.26-29,180.86-11,713.70

Finding the Fourth Proportional to 21,144.26, 29,180.86 and 11,713.70

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Solution

The fourth proportional to 21,144.26, 29,180.86 and 11,713.70 is: 16,165.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.26 : 29,180.86 = 11,713.70 : x
  2. Step 2: Convert to fraction form
    21,144.26/29,180.86 = 11,713.70/x
  3. Step 3: Cross multiply
    21,144.26x = 29,180.86 × 11,713.70
  4. Step 4: Simplify right side
    21,144.26x = 341,815,810.50
  5. Step 5: Solve for x
    x = 341,815,810.50/21,144.26
  6. Step 6: Final answer
    x = 16,165.89

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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.