Home / 20,472.23-28,249.66-11,519.54

Finding the Fourth Proportional to 20,472.23, 28,249.66 and 11,519.54

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Solution

The fourth proportional to 20,472.23, 28,249.66 and 11,519.54 is: 15,895.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.23 : 28,249.66 = 11,519.54 : x
  2. Step 2: Convert to fraction form
    20,472.23/28,249.66 = 11,519.54/x
  3. Step 3: Cross multiply
    20,472.23x = 28,249.66 × 11,519.54
  4. Step 4: Simplify right side
    20,472.23x = 325,423,088.36
  5. Step 5: Solve for x
    x = 325,423,088.36/20,472.23
  6. Step 6: Final answer
    x = 15,895.83

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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.