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Finding the Fourth Proportional to 28,537.29, 42,807.96 and 8,813.30

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Solution

The fourth proportional to 28,537.29, 42,807.96 and 8,813.30 is: 13,220.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,537.29 : 42,807.96 = 8,813.30 : x
  2. Step 2: Convert to fraction form
    28,537.29/42,807.96 = 8,813.30/x
  3. Step 3: Cross multiply
    28,537.29x = 42,807.96 × 8,813.30
  4. Step 4: Simplify right side
    28,537.29x = 377,279,179.83
  5. Step 5: Solve for x
    x = 377,279,179.83/28,537.29
  6. Step 6: Final answer
    x = 13,220.57

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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.