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Finding the Fourth Proportional to 11,102.80, 16,645.98 and 6,719.32

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Solution

The fourth proportional to 11,102.80, 16,645.98 and 6,719.32 is: 10,074.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,102.80 : 16,645.98 = 6,719.32 : x
  2. Step 2: Convert to fraction form
    11,102.80/16,645.98 = 6,719.32/x
  3. Step 3: Cross multiply
    11,102.80x = 16,645.98 × 6,719.32
  4. Step 4: Simplify right side
    11,102.80x = 111,849,666.33
  5. Step 5: Solve for x
    x = 111,849,666.33/11,102.80
  6. Step 6: Final answer
    x = 10,074.01

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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.