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Finding the Fourth Proportional to 15,490.36, 23,215 and 8,101

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Solution

The fourth proportional to 15,490.36, 23,215 and 8,101 is: 12,140.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.36 : 23,215 = 8,101 : x
  2. Step 2: Convert to fraction form
    15,490.36/23,215 = 8,101/x
  3. Step 3: Cross multiply
    15,490.36x = 23,215 × 8,101
  4. Step 4: Simplify right side
    15,490.36x = 188,064,715
  5. Step 5: Solve for x
    x = 188,064,715/15,490.36
  6. Step 6: Final answer
    x = 12,140.76

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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.