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Finding the Fourth Proportional to 18,637.54, 27,960.41 and 8,109.21

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Solution

The fourth proportional to 18,637.54, 27,960.41 and 8,109.21 is: 12,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.54 : 27,960.41 = 8,109.21 : x
  2. Step 2: Convert to fraction form
    18,637.54/27,960.41 = 8,109.21/x
  3. Step 3: Cross multiply
    18,637.54x = 27,960.41 × 8,109.21
  4. Step 4: Simplify right side
    18,637.54x = 226,736,836.38
  5. Step 5: Solve for x
    x = 226,736,836.38/18,637.54
  6. Step 6: Final answer
    x = 12,165.60

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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.