Home / 20,125.99-27,773.45-11,172.96

Finding the Fourth Proportional to 20,125.99, 27,773.45 and 11,172.96

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Solution

The fourth proportional to 20,125.99, 27,773.45 and 11,172.96 is: 15,418.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.99 : 27,773.45 = 11,172.96 : x
  2. Step 2: Convert to fraction form
    20,125.99/27,773.45 = 11,172.96/x
  3. Step 3: Cross multiply
    20,125.99x = 27,773.45 × 11,172.96
  4. Step 4: Simplify right side
    20,125.99x = 310,311,631.95
  5. Step 5: Solve for x
    x = 310,311,631.95/20,125.99
  6. Step 6: Final answer
    x = 15,418.45

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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.