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Finding the Fourth Proportional to 18,477.32, 27,717.47 and 7,377.92

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Solution

The fourth proportional to 18,477.32, 27,717.47 and 7,377.92 is: 11,067.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,477.32 : 27,717.47 = 7,377.92 : x
  2. Step 2: Convert to fraction form
    18,477.32/27,717.47 = 7,377.92/x
  3. Step 3: Cross multiply
    18,477.32x = 27,717.47 × 7,377.92
  4. Step 4: Simplify right side
    18,477.32x = 204,497,100.79
  5. Step 5: Solve for x
    x = 204,497,100.79/18,477.32
  6. Step 6: Final answer
    x = 11,067.47

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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.