Home / 20,212.68-30,322.32-6,886.86

Finding the Fourth Proportional to 20,212.68, 30,322.32 and 6,886.86

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Solution

The fourth proportional to 20,212.68, 30,322.32 and 6,886.86 is: 10,331.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.68 : 30,322.32 = 6,886.86 : x
  2. Step 2: Convert to fraction form
    20,212.68/30,322.32 = 6,886.86/x
  3. Step 3: Cross multiply
    20,212.68x = 30,322.32 × 6,886.86
  4. Step 4: Simplify right side
    20,212.68x = 208,825,572.72
  5. Step 5: Solve for x
    x = 208,825,572.72/20,212.68
  6. Step 6: Final answer
    x = 10,331.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.