Home / 28,812.38-43,169.42-20,451.02

Finding the Fourth Proportional to 28,812.38, 43,169.42 and 20,451.02

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Solution

The fourth proportional to 28,812.38, 43,169.42 and 20,451.02 is: 30,641.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.38 : 43,169.42 = 20,451.02 : x
  2. Step 2: Convert to fraction form
    28,812.38/43,169.42 = 20,451.02/x
  3. Step 3: Cross multiply
    28,812.38x = 43,169.42 × 20,451.02
  4. Step 4: Simplify right side
    28,812.38x = 882,858,507.09
  5. Step 5: Solve for x
    x = 882,858,507.09/28,812.38
  6. Step 6: Final answer
    x = 30,641.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.