Home / 20,550.75-28,357.19-11,475.01

Finding the Fourth Proportional to 20,550.75, 28,357.19 and 11,475.01

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Solution

The fourth proportional to 20,550.75, 28,357.19 and 11,475.01 is: 15,833.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.75 : 28,357.19 = 11,475.01 : x
  2. Step 2: Convert to fraction form
    20,550.75/28,357.19 = 11,475.01/x
  3. Step 3: Cross multiply
    20,550.75x = 28,357.19 × 11,475.01
  4. Step 4: Simplify right side
    20,550.75x = 325,398,925.72
  5. Step 5: Solve for x
    x = 325,398,925.72/20,550.75
  6. Step 6: Final answer
    x = 15,833.92

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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.