Home / 20,151.80-27,811.23-11,199.14

Finding the Fourth Proportional to 20,151.80, 27,811.23 and 11,199.14

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Solution

The fourth proportional to 20,151.80, 27,811.23 and 11,199.14 is: 15,455.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.80 : 27,811.23 = 11,199.14 : x
  2. Step 2: Convert to fraction form
    20,151.80/27,811.23 = 11,199.14/x
  3. Step 3: Cross multiply
    20,151.80x = 27,811.23 × 11,199.14
  4. Step 4: Simplify right side
    20,151.80x = 311,461,858.34
  5. Step 5: Solve for x
    x = 311,461,858.34/20,151.80
  6. Step 6: Final answer
    x = 15,455.78

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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.