Home / 21,396.72-29,531.22-11,963.52

Finding the Fourth Proportional to 21,396.72, 29,531.22 and 11,963.52

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Solution

The fourth proportional to 21,396.72, 29,531.22 and 11,963.52 is: 16,511.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396.72 : 29,531.22 = 11,963.52 : x
  2. Step 2: Convert to fraction form
    21,396.72/29,531.22 = 11,963.52/x
  3. Step 3: Cross multiply
    21,396.72x = 29,531.22 × 11,963.52
  4. Step 4: Simplify right side
    21,396.72x = 353,297,341.09
  5. Step 5: Solve for x
    x = 353,297,341.09/21,396.72
  6. Step 6: Final answer
    x = 16,511.75

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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.