Home / 20,309.64-28,022.76-11,808.96

Finding the Fourth Proportional to 20,309.64, 28,022.76 and 11,808.96

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Solution

The fourth proportional to 20,309.64, 28,022.76 and 11,808.96 is: 16,293.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.64 : 28,022.76 = 11,808.96 : x
  2. Step 2: Convert to fraction form
    20,309.64/28,022.76 = 11,808.96/x
  3. Step 3: Cross multiply
    20,309.64x = 28,022.76 × 11,808.96
  4. Step 4: Simplify right side
    20,309.64x = 330,919,651.93
  5. Step 5: Solve for x
    x = 330,919,651.93/20,309.64
  6. Step 6: Final answer
    x = 16,293.72

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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.