Home / 20,620.62-28,479.66-13,933.86

Finding the Fourth Proportional to 20,620.62, 28,479.66 and 13,933.86

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Solution

The fourth proportional to 20,620.62, 28,479.66 and 13,933.86 is: 19,244.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.62 : 28,479.66 = 13,933.86 : x
  2. Step 2: Convert to fraction form
    20,620.62/28,479.66 = 13,933.86/x
  3. Step 3: Cross multiply
    20,620.62x = 28,479.66 × 13,933.86
  4. Step 4: Simplify right side
    20,620.62x = 396,831,595.29
  5. Step 5: Solve for x
    x = 396,831,595.29/20,620.62
  6. Step 6: Final answer
    x = 19,244.41

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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.