Home / 20,869.37-28,795.48-12,367.75

Finding the Fourth Proportional to 20,869.37, 28,795.48 and 12,367.75

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Solution

The fourth proportional to 20,869.37, 28,795.48 and 12,367.75 is: 17,064.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869.37 : 28,795.48 = 12,367.75 : x
  2. Step 2: Convert to fraction form
    20,869.37/28,795.48 = 12,367.75/x
  3. Step 3: Cross multiply
    20,869.37x = 28,795.48 × 12,367.75
  4. Step 4: Simplify right side
    20,869.37x = 356,135,091.95
  5. Step 5: Solve for x
    x = 356,135,091.95/20,869.37
  6. Step 6: Final answer
    x = 17,064.97

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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.