Home / 20,699.33-28,564.24-11,267.90

Finding the Fourth Proportional to 20,699.33, 28,564.24 and 11,267.90

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Solution

The fourth proportional to 20,699.33, 28,564.24 and 11,267.90 is: 15,549.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.33 : 28,564.24 = 11,267.90 : x
  2. Step 2: Convert to fraction form
    20,699.33/28,564.24 = 11,267.90/x
  3. Step 3: Cross multiply
    20,699.33x = 28,564.24 × 11,267.90
  4. Step 4: Simplify right side
    20,699.33x = 321,858,999.90
  5. Step 5: Solve for x
    x = 321,858,999.90/20,699.33
  6. Step 6: Final answer
    x = 15,549.25

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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.