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Finding the Fourth Proportional to 22,107.90, 30,507.90 and 12,036.09

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Solution

The fourth proportional to 22,107.90, 30,507.90 and 12,036.09 is: 16,609.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,107.90 : 30,507.90 = 12,036.09 : x
  2. Step 2: Convert to fraction form
    22,107.90/30,507.90 = 12,036.09/x
  3. Step 3: Cross multiply
    22,107.90x = 30,507.90 × 12,036.09
  4. Step 4: Simplify right side
    22,107.90x = 367,195,830.11
  5. Step 5: Solve for x
    x = 367,195,830.11/22,107.90
  6. Step 6: Final answer
    x = 16,609.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.