Home / 20,743.31-28,624.64-11,789.57

Finding the Fourth Proportional to 20,743.31, 28,624.64 and 11,789.57

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Solution

The fourth proportional to 20,743.31, 28,624.64 and 11,789.57 is: 16,268.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.31 : 28,624.64 = 11,789.57 : x
  2. Step 2: Convert to fraction form
    20,743.31/28,624.64 = 11,789.57/x
  3. Step 3: Cross multiply
    20,743.31x = 28,624.64 × 11,789.57
  4. Step 4: Simplify right side
    20,743.31x = 337,471,994.93
  5. Step 5: Solve for x
    x = 337,471,994.93/20,743.31
  6. Step 6: Final answer
    x = 16,268.96

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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.