Home / 20,699.38-28,565.16-11,267.96

Finding the Fourth Proportional to 20,699.38, 28,565.16 and 11,267.96

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Solution

The fourth proportional to 20,699.38, 28,565.16 and 11,267.96 is: 15,549.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.38 : 28,565.16 = 11,267.96 : x
  2. Step 2: Convert to fraction form
    20,699.38/28,565.16 = 11,267.96/x
  3. Step 3: Cross multiply
    20,699.38x = 28,565.16 × 11,267.96
  4. Step 4: Simplify right side
    20,699.38x = 321,871,080.27
  5. Step 5: Solve for x
    x = 321,871,080.27/20,699.38
  6. Step 6: Final answer
    x = 15,549.79

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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.