Home / 20,699.69-28,565.57-11,268.25

Finding the Fourth Proportional to 20,699.69, 28,565.57 and 11,268.25

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Solution

The fourth proportional to 20,699.69, 28,565.57 and 11,268.25 is: 15,550.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.69 : 28,565.57 = 11,268.25 : x
  2. Step 2: Convert to fraction form
    20,699.69/28,565.57 = 11,268.25/x
  3. Step 3: Cross multiply
    20,699.69x = 28,565.57 × 11,268.25
  4. Step 4: Simplify right side
    20,699.69x = 321,883,984.15
  5. Step 5: Solve for x
    x = 321,883,984.15/20,699.69
  6. Step 6: Final answer
    x = 15,550.18

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1.5x scale

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.