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Finding the Fourth Proportional to 12,517, 18,775.50 and 4,723.99

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Solution

The fourth proportional to 12,517, 18,775.50 and 4,723.99 is: 7,085.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,517 : 18,775.50 = 4,723.99 : x
  2. Step 2: Convert to fraction form
    12,517/18,775.50 = 4,723.99/x
  3. Step 3: Cross multiply
    12,517x = 18,775.50 × 4,723.99
  4. Step 4: Simplify right side
    12,517x = 88,695,274.25
  5. Step 5: Solve for x
    x = 88,695,274.25/12,517
  6. Step 6: Final answer
    x = 7,085.99

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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.