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Finding the Fourth Proportional to 21,696.22, 29,941 and 12,746.60

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Solution

The fourth proportional to 21,696.22, 29,941 and 12,746.60 is: 17,590.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,696.22 : 29,941 = 12,746.60 : x
  2. Step 2: Convert to fraction form
    21,696.22/29,941 = 12,746.60/x
  3. Step 3: Cross multiply
    21,696.22x = 29,941 × 12,746.60
  4. Step 4: Simplify right side
    21,696.22x = 381,645,950.60
  5. Step 5: Solve for x
    x = 381,645,950.60/21,696.22
  6. Step 6: Final answer
    x = 17,590.44

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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.