Home / 20,769.16-28,661.30-11,337.64

Finding the Fourth Proportional to 20,769.16, 28,661.30 and 11,337.64

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Solution

The fourth proportional to 20,769.16, 28,661.30 and 11,337.64 is: 15,645.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.16 : 28,661.30 = 11,337.64 : x
  2. Step 2: Convert to fraction form
    20,769.16/28,661.30 = 11,337.64/x
  3. Step 3: Cross multiply
    20,769.16x = 28,661.30 × 11,337.64
  4. Step 4: Simplify right side
    20,769.16x = 324,951,501.33
  5. Step 5: Solve for x
    x = 324,951,501.33/20,769.16
  6. Step 6: Final answer
    x = 15,645.87

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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.