Home / 20,115.26-27,755.01-12,157.93

Finding the Fourth Proportional to 20,115.26, 27,755.01 and 12,157.93

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Solution

The fourth proportional to 20,115.26, 27,755.01 and 12,157.93 is: 16,775.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.26 : 27,755.01 = 12,157.93 : x
  2. Step 2: Convert to fraction form
    20,115.26/27,755.01 = 12,157.93/x
  3. Step 3: Cross multiply
    20,115.26x = 27,755.01 × 12,157.93
  4. Step 4: Simplify right side
    20,115.26x = 337,443,399.34
  5. Step 5: Solve for x
    x = 337,443,399.34/20,115.26
  6. Step 6: Final answer
    x = 16,775.50

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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.