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Finding the Fourth Proportional to 12,696, 19,045.20 and 4,375.68

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Solution

The fourth proportional to 12,696, 19,045.20 and 4,375.68 is: 6,563.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696 : 19,045.20 = 4,375.68 : x
  2. Step 2: Convert to fraction form
    12,696/19,045.20 = 4,375.68/x
  3. Step 3: Cross multiply
    12,696x = 19,045.20 × 4,375.68
  4. Step 4: Simplify right side
    12,696x = 83,335,700.74
  5. Step 5: Solve for x
    x = 83,335,700.74/12,696
  6. Step 6: Final answer
    x = 6,563.93

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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.