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Finding the Fourth Proportional to 18,651.07, 27,981.02 and 6,171.09

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Solution

The fourth proportional to 18,651.07, 27,981.02 and 6,171.09 is: 9,258.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.07 : 27,981.02 = 6,171.09 : x
  2. Step 2: Convert to fraction form
    18,651.07/27,981.02 = 6,171.09/x
  3. Step 3: Cross multiply
    18,651.07x = 27,981.02 × 6,171.09
  4. Step 4: Simplify right side
    18,651.07x = 172,673,392.71
  5. Step 5: Solve for x
    x = 172,673,392.71/18,651.07
  6. Step 6: Final answer
    x = 9,258.10

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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.