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Finding the Fourth Proportional to 18,441.71, 27,662.57 and 7,904.88

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Solution

The fourth proportional to 18,441.71, 27,662.57 and 7,904.88 is: 11,857.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,441.71 : 27,662.57 = 7,904.88 : x
  2. Step 2: Convert to fraction form
    18,441.71/27,662.57 = 7,904.88/x
  3. Step 3: Cross multiply
    18,441.71x = 27,662.57 × 7,904.88
  4. Step 4: Simplify right side
    18,441.71x = 218,669,256.82
  5. Step 5: Solve for x
    x = 218,669,256.82/18,441.71
  6. Step 6: Final answer
    x = 11,857.32

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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.