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Finding the Fourth Proportional to 10,879.93, 16,308.34 and 6,918.73

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Solution

The fourth proportional to 10,879.93, 16,308.34 and 6,918.73 is: 10,370.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.93 : 16,308.34 = 6,918.73 : x
  2. Step 2: Convert to fraction form
    10,879.93/16,308.34 = 6,918.73/x
  3. Step 3: Cross multiply
    10,879.93x = 16,308.34 × 6,918.73
  4. Step 4: Simplify right side
    10,879.93x = 112,833,001.21
  5. Step 5: Solve for x
    x = 112,833,001.21/10,879.93
  6. Step 6: Final answer
    x = 10,370.75

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1.5x scale

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.