Home / 20,884.12-31,365.06-19,147.48

Finding the Fourth Proportional to 20,884.12, 31,365.06 and 19,147.48

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Solution

The fourth proportional to 20,884.12, 31,365.06 and 19,147.48 is: 28,756.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.12 : 31,365.06 = 19,147.48 : x
  2. Step 2: Convert to fraction form
    20,884.12/31,365.06 = 19,147.48/x
  3. Step 3: Cross multiply
    20,884.12x = 31,365.06 × 19,147.48
  4. Step 4: Simplify right side
    20,884.12x = 600,561,859.05
  5. Step 5: Solve for x
    x = 600,561,859.05/20,884.12
  6. Step 6: Final answer
    x = 28,756.87

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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.