Home / 20,712.93-28,584.15-11,281.48

Finding the Fourth Proportional to 20,712.93, 28,584.15 and 11,281.48

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Solution

The fourth proportional to 20,712.93, 28,584.15 and 11,281.48 is: 15,568.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.93 : 28,584.15 = 11,281.48 : x
  2. Step 2: Convert to fraction form
    20,712.93/28,584.15 = 11,281.48/x
  3. Step 3: Cross multiply
    20,712.93x = 28,584.15 × 11,281.48
  4. Step 4: Simplify right side
    20,712.93x = 322,471,516.54
  5. Step 5: Solve for x
    x = 322,471,516.54/20,712.93
  6. Step 6: Final answer
    x = 15,568.61

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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.