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Finding the Fourth Proportional to 18,578.46, 27,868.60 and 7,483.65

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Solution

The fourth proportional to 18,578.46, 27,868.60 and 7,483.65 is: 11,225.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578.46 : 27,868.60 = 7,483.65 : x
  2. Step 2: Convert to fraction form
    18,578.46/27,868.60 = 7,483.65/x
  3. Step 3: Cross multiply
    18,578.46x = 27,868.60 × 7,483.65
  4. Step 4: Simplify right side
    18,578.46x = 208,558,848.39
  5. Step 5: Solve for x
    x = 208,558,848.39/18,578.46
  6. Step 6: Final answer
    x = 11,225.84

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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.