Home / 20,433.91-28,198.13-11,359.23

Finding the Fourth Proportional to 20,433.91, 28,198.13 and 11,359.23

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Solution

The fourth proportional to 20,433.91, 28,198.13 and 11,359.23 is: 15,675.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.91 : 28,198.13 = 11,359.23 : x
  2. Step 2: Convert to fraction form
    20,433.91/28,198.13 = 11,359.23/x
  3. Step 3: Cross multiply
    20,433.91x = 28,198.13 × 11,359.23
  4. Step 4: Simplify right side
    20,433.91x = 320,308,998.47
  5. Step 5: Solve for x
    x = 320,308,998.47/20,433.91
  6. Step 6: Final answer
    x = 15,675.36

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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.