Home / 20,860.67-28,815.32-15,546.26

Finding the Fourth Proportional to 20,860.67, 28,815.32 and 15,546.26

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Solution

The fourth proportional to 20,860.67, 28,815.32 and 15,546.26 is: 21,474.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.67 : 28,815.32 = 15,546.26 : x
  2. Step 2: Convert to fraction form
    20,860.67/28,815.32 = 15,546.26/x
  3. Step 3: Cross multiply
    20,860.67x = 28,815.32 × 15,546.26
  4. Step 4: Simplify right side
    20,860.67x = 447,970,456.70
  5. Step 5: Solve for x
    x = 447,970,456.70/20,860.67
  6. Step 6: Final answer
    x = 21,474.40

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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.