Home / 20,700.57-28,566.21-11,268.93

Finding the Fourth Proportional to 20,700.57, 28,566.21 and 11,268.93

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Solution

The fourth proportional to 20,700.57, 28,566.21 and 11,268.93 is: 15,550.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.57 : 28,566.21 = 11,268.93 : x
  2. Step 2: Convert to fraction form
    20,700.57/28,566.21 = 11,268.93/x
  3. Step 3: Cross multiply
    20,700.57x = 28,566.21 × 11,268.93
  4. Step 4: Simplify right side
    20,700.57x = 321,910,620.86
  5. Step 5: Solve for x
    x = 321,910,620.86/20,700.57
  6. Step 6: Final answer
    x = 15,550.81

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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.