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Finding the Fourth Proportional to 28,886.82, 39,863.82 and 16,311.54

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Solution

The fourth proportional to 28,886.82, 39,863.82 and 16,311.54 is: 22,509.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,886.82 : 39,863.82 = 16,311.54 : x
  2. Step 2: Convert to fraction form
    28,886.82/39,863.82 = 16,311.54/x
  3. Step 3: Cross multiply
    28,886.82x = 39,863.82 × 16,311.54
  4. Step 4: Simplify right side
    28,886.82x = 650,240,294.48
  5. Step 5: Solve for x
    x = 650,240,294.48/28,886.82
  6. Step 6: Final answer
    x = 22,509.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.