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Finding the Fourth Proportional to 11,141.15, 16,714.50 and 7,860.65

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Solution

The fourth proportional to 11,141.15, 16,714.50 and 7,860.65 is: 11,792.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,141.15 : 16,714.50 = 7,860.65 : x
  2. Step 2: Convert to fraction form
    11,141.15/16,714.50 = 7,860.65/x
  3. Step 3: Cross multiply
    11,141.15x = 16,714.50 × 7,860.65
  4. Step 4: Simplify right side
    11,141.15x = 131,386,765.59
  5. Step 5: Solve for x
    x = 131,386,765.59/11,141.15
  6. Step 6: Final answer
    x = 11,792.93

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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.