Home / 20,375.80-30,561.10-7,887.27

Finding the Fourth Proportional to 20,375.80, 30,561.10 and 7,887.27

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Solution

The fourth proportional to 20,375.80, 30,561.10 and 7,887.27 is: 11,829.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.80 : 30,561.10 = 7,887.27 : x
  2. Step 2: Convert to fraction form
    20,375.80/30,561.10 = 7,887.27/x
  3. Step 3: Cross multiply
    20,375.80x = 30,561.10 × 7,887.27
  4. Step 4: Simplify right side
    20,375.80x = 241,043,742.08
  5. Step 5: Solve for x
    x = 241,043,742.08/20,375.80
  6. Step 6: Final answer
    x = 11,829.90

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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.