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Finding the Fourth Proportional to 27,257.67, 40,890.02 and 8,538.57

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Solution

The fourth proportional to 27,257.67, 40,890.02 and 8,538.57 is: 12,808.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,257.67 : 40,890.02 = 8,538.57 : x
  2. Step 2: Convert to fraction form
    27,257.67/40,890.02 = 8,538.57/x
  3. Step 3: Cross multiply
    27,257.67x = 40,890.02 × 8,538.57
  4. Step 4: Simplify right side
    27,257.67x = 349,142,255.38
  5. Step 5: Solve for x
    x = 349,142,255.38/27,257.67
  6. Step 6: Final answer
    x = 12,808.95

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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.