Home / 20,724.96-28,600.80-11,293.92

Finding the Fourth Proportional to 20,724.96, 28,600.80 and 11,293.92

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Solution

The fourth proportional to 20,724.96, 28,600.80 and 11,293.92 is: 15,585.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.96 : 28,600.80 = 11,293.92 : x
  2. Step 2: Convert to fraction form
    20,724.96/28,600.80 = 11,293.92/x
  3. Step 3: Cross multiply
    20,724.96x = 28,600.80 × 11,293.92
  4. Step 4: Simplify right side
    20,724.96x = 323,015,147.14
  5. Step 5: Solve for x
    x = 323,015,147.14/20,724.96
  6. Step 6: Final answer
    x = 15,585.80

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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.