Home / 20,699.94-28,565.92-11,268.50

Finding the Fourth Proportional to 20,699.94, 28,565.92 and 11,268.50

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Solution

The fourth proportional to 20,699.94, 28,565.92 and 11,268.50 is: 15,550.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.94 : 28,565.92 = 11,268.50 : x
  2. Step 2: Convert to fraction form
    20,699.94/28,565.92 = 11,268.50/x
  3. Step 3: Cross multiply
    20,699.94x = 28,565.92 × 11,268.50
  4. Step 4: Simplify right side
    20,699.94x = 321,895,069.52
  5. Step 5: Solve for x
    x = 321,895,069.52/20,699.94
  6. Step 6: Final answer
    x = 15,550.53

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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.