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Finding the Fourth Proportional to 28,508.40, 42,750.29 and 10,965.96

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Solution

The fourth proportional to 28,508.40, 42,750.29 and 10,965.96 is: 16,444.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.40 : 42,750.29 = 10,965.96 : x
  2. Step 2: Convert to fraction form
    28,508.40/42,750.29 = 10,965.96/x
  3. Step 3: Cross multiply
    28,508.40x = 42,750.29 × 10,965.96
  4. Step 4: Simplify right side
    28,508.40x = 468,797,997.54
  5. Step 5: Solve for x
    x = 468,797,997.54/28,508.40
  6. Step 6: Final answer
    x = 16,444.21

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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.