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Finding the Fourth Proportional to 28,510.25, 42,765.37 and 8,788.82

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Solution

The fourth proportional to 28,510.25, 42,765.37 and 8,788.82 is: 13,183.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.25 : 42,765.37 = 8,788.82 : x
  2. Step 2: Convert to fraction form
    28,510.25/42,765.37 = 8,788.82/x
  3. Step 3: Cross multiply
    28,510.25x = 42,765.37 × 8,788.82
  4. Step 4: Simplify right side
    28,510.25x = 375,856,903.36
  5. Step 5: Solve for x
    x = 375,856,903.36/28,510.25
  6. Step 6: Final answer
    x = 13,183.22

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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.