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Finding the Fourth Proportional to 12,317, 18,475.50 and 5,391.52

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Solution

The fourth proportional to 12,317, 18,475.50 and 5,391.52 is: 8,087.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,317 : 18,475.50 = 5,391.52 : x
  2. Step 2: Convert to fraction form
    12,317/18,475.50 = 5,391.52/x
  3. Step 3: Cross multiply
    12,317x = 18,475.50 × 5,391.52
  4. Step 4: Simplify right side
    12,317x = 99,611,027.76
  5. Step 5: Solve for x
    x = 99,611,027.76/12,317
  6. Step 6: Final answer
    x = 8,087.28

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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.