Home / 20,375.89-30,561.23-7,887.37

Finding the Fourth Proportional to 20,375.89, 30,561.23 and 7,887.37

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Solution

The fourth proportional to 20,375.89, 30,561.23 and 7,887.37 is: 11,830.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.89 : 30,561.23 = 7,887.37 : x
  2. Step 2: Convert to fraction form
    20,375.89/30,561.23 = 7,887.37/x
  3. Step 3: Cross multiply
    20,375.89x = 30,561.23 × 7,887.37
  4. Step 4: Simplify right side
    20,375.89x = 241,047,614.68
  5. Step 5: Solve for x
    x = 241,047,614.68/20,375.89
  6. Step 6: Final answer
    x = 11,830.04

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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.