Home / 20,222.32-27,890.88-13,150.96

Finding the Fourth Proportional to 20,222.32, 27,890.88 and 13,150.96

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Solution

The fourth proportional to 20,222.32, 27,890.88 and 13,150.96 is: 18,137.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,222.32 : 27,890.88 = 13,150.96 : x
  2. Step 2: Convert to fraction form
    20,222.32/27,890.88 = 13,150.96/x
  3. Step 3: Cross multiply
    20,222.32x = 27,890.88 × 13,150.96
  4. Step 4: Simplify right side
    20,222.32x = 366,791,847.24
  5. Step 5: Solve for x
    x = 366,791,847.24/20,222.32
  6. Step 6: Final answer
    x = 18,137.97

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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.