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Finding the Fourth Proportional to 12,650.76, 18,977.76 and 4,858.56

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Solution

The fourth proportional to 12,650.76, 18,977.76 and 4,858.56 is: 7,288.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,650.76 : 18,977.76 = 4,858.56 : x
  2. Step 2: Convert to fraction form
    12,650.76/18,977.76 = 4,858.56/x
  3. Step 3: Cross multiply
    12,650.76x = 18,977.76 × 4,858.56
  4. Step 4: Simplify right side
    12,650.76x = 92,204,585.63
  5. Step 5: Solve for x
    x = 92,204,585.63/12,650.76
  6. Step 6: Final answer
    x = 7,288.46

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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.