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Finding the Fourth Proportional to 19,146.54, 28,719.82 and 8,751

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Solution

The fourth proportional to 19,146.54, 28,719.82 and 8,751 is: 13,126.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,146.54 : 28,719.82 = 8,751 : x
  2. Step 2: Convert to fraction form
    19,146.54/28,719.82 = 8,751/x
  3. Step 3: Cross multiply
    19,146.54x = 28,719.82 × 8,751
  4. Step 4: Simplify right side
    19,146.54x = 251,327,144.82
  5. Step 5: Solve for x
    x = 251,327,144.82/19,146.54
  6. Step 6: Final answer
    x = 13,126.50

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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.