Home / 20,699.37-28,565.87-11,747.25

Finding the Fourth Proportional to 20,699.37, 28,565.87 and 11,747.25

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Solution

The fourth proportional to 20,699.37, 28,565.87 and 11,747.25 is: 16,211.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.37 : 28,565.87 = 11,747.25 : x
  2. Step 2: Convert to fraction form
    20,699.37/28,565.87 = 11,747.25/x
  3. Step 3: Cross multiply
    20,699.37x = 28,565.87 × 11,747.25
  4. Step 4: Simplify right side
    20,699.37x = 335,570,357.62
  5. Step 5: Solve for x
    x = 335,570,357.62/20,699.37
  6. Step 6: Final answer
    x = 16,211.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.