Home / 20,769.32-28,661.64-11,337.88

Finding the Fourth Proportional to 20,769.32, 28,661.64 and 11,337.88

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Solution

The fourth proportional to 20,769.32, 28,661.64 and 11,337.88 is: 15,646.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.32 : 28,661.64 = 11,337.88 : x
  2. Step 2: Convert to fraction form
    20,769.32/28,661.64 = 11,337.88/x
  3. Step 3: Cross multiply
    20,769.32x = 28,661.64 × 11,337.88
  4. Step 4: Simplify right side
    20,769.32x = 324,962,234.92
  5. Step 5: Solve for x
    x = 324,962,234.92/20,769.32
  6. Step 6: Final answer
    x = 15,646.26

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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.