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Finding the Fourth Proportional to 11,010.15, 16,509.82 and 7,679.99

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Solution

The fourth proportional to 11,010.15, 16,509.82 and 7,679.99 is: 11,516.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,010.15 : 16,509.82 = 7,679.99 : x
  2. Step 2: Convert to fraction form
    11,010.15/16,509.82 = 7,679.99/x
  3. Step 3: Cross multiply
    11,010.15x = 16,509.82 × 7,679.99
  4. Step 4: Simplify right side
    11,010.15x = 126,795,252.50
  5. Step 5: Solve for x
    x = 126,795,252.50/11,010.15
  6. Step 6: Final answer
    x = 11,516.21

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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.