Home / 20,151.20-27,804.36-12,191.84

Finding the Fourth Proportional to 20,151.20, 27,804.36 and 12,191.84

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Solution

The fourth proportional to 20,151.20, 27,804.36 and 12,191.84 is: 16,822.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.20 : 27,804.36 = 12,191.84 : x
  2. Step 2: Convert to fraction form
    20,151.20/27,804.36 = 12,191.84/x
  3. Step 3: Cross multiply
    20,151.20x = 27,804.36 × 12,191.84
  4. Step 4: Simplify right side
    20,151.20x = 338,986,308.42
  5. Step 5: Solve for x
    x = 338,986,308.42/20,151.20
  6. Step 6: Final answer
    x = 16,822.14

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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.