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Finding the Fourth Proportional to 18,473, 27,715.40 and 6,618.77

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Solution

The fourth proportional to 18,473, 27,715.40 and 6,618.77 is: 9,930.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,473 : 27,715.40 = 6,618.77 : x
  2. Step 2: Convert to fraction form
    18,473/27,715.40 = 6,618.77/x
  3. Step 3: Cross multiply
    18,473x = 27,715.40 × 6,618.77
  4. Step 4: Simplify right side
    18,473x = 183,441,858.06
  5. Step 5: Solve for x
    x = 183,441,858.06/18,473
  6. Step 6: Final answer
    x = 9,930.27

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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.