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Finding the Fourth Proportional to 22,107.63, 30,508.52 and 12,171.63

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Solution

The fourth proportional to 22,107.63, 30,508.52 and 12,171.63 is: 16,796.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,107.63 : 30,508.52 = 12,171.63 : x
  2. Step 2: Convert to fraction form
    22,107.63/30,508.52 = 12,171.63/x
  3. Step 3: Cross multiply
    22,107.63x = 30,508.52 × 12,171.63
  4. Step 4: Simplify right side
    22,107.63x = 371,338,417.29
  5. Step 5: Solve for x
    x = 371,338,417.29/22,107.63
  6. Step 6: Final answer
    x = 16,796.84

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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.