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Finding the Fourth Proportional to 18,107.45, 27,168.92 and 7,579.93

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Solution

The fourth proportional to 18,107.45, 27,168.92 and 7,579.93 is: 11,373.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,107.45 : 27,168.92 = 7,579.93 : x
  2. Step 2: Convert to fraction form
    18,107.45/27,168.92 = 7,579.93/x
  3. Step 3: Cross multiply
    18,107.45x = 27,168.92 × 7,579.93
  4. Step 4: Simplify right side
    18,107.45x = 205,938,485.32
  5. Step 5: Solve for x
    x = 205,938,485.32/18,107.45
  6. Step 6: Final answer
    x = 11,373.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.