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Finding the Fourth Proportional to 16,879.88, 25,312.52 and 5,787.66

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Solution

The fourth proportional to 16,879.88, 25,312.52 and 5,787.66 is: 8,678.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,879.88 : 25,312.52 = 5,787.66 : x
  2. Step 2: Convert to fraction form
    16,879.88/25,312.52 = 5,787.66/x
  3. Step 3: Cross multiply
    16,879.88x = 25,312.52 × 5,787.66
  4. Step 4: Simplify right side
    16,879.88x = 146,500,259.50
  5. Step 5: Solve for x
    x = 146,500,259.50/16,879.88
  6. Step 6: Final answer
    x = 8,678.99

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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.