Home / 20,499.99-28,286.22-11,545.57

Finding the Fourth Proportional to 20,499.99, 28,286.22 and 11,545.57

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Solution

The fourth proportional to 20,499.99, 28,286.22 and 11,545.57 is: 15,930.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.99 : 28,286.22 = 11,545.57 : x
  2. Step 2: Convert to fraction form
    20,499.99/28,286.22 = 11,545.57/x
  3. Step 3: Cross multiply
    20,499.99x = 28,286.22 × 11,545.57
  4. Step 4: Simplify right side
    20,499.99x = 326,580,533.05
  5. Step 5: Solve for x
    x = 326,580,533.05/20,499.99
  6. Step 6: Final answer
    x = 15,930.77

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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.