Home / 21,072.85-29,081.69-11,641.21

Finding the Fourth Proportional to 21,072.85, 29,081.69 and 11,641.21

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Solution

The fourth proportional to 21,072.85, 29,081.69 and 11,641.21 is: 16,065.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.85 : 29,081.69 = 11,641.21 : x
  2. Step 2: Convert to fraction form
    21,072.85/29,081.69 = 11,641.21/x
  3. Step 3: Cross multiply
    21,072.85x = 29,081.69 × 11,641.21
  4. Step 4: Simplify right side
    21,072.85x = 338,546,060.44
  5. Step 5: Solve for x
    x = 338,546,060.44/21,072.85
  6. Step 6: Final answer
    x = 16,065.51

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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.