Home / 20,934.99-28,890.26-11,503.55

Finding the Fourth Proportional to 20,934.99, 28,890.26 and 11,503.55

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Solution

The fourth proportional to 20,934.99, 28,890.26 and 11,503.55 is: 15,874.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.99 : 28,890.26 = 11,503.55 : x
  2. Step 2: Convert to fraction form
    20,934.99/28,890.26 = 11,503.55/x
  3. Step 3: Cross multiply
    20,934.99x = 28,890.26 × 11,503.55
  4. Step 4: Simplify right side
    20,934.99x = 332,340,550.42
  5. Step 5: Solve for x
    x = 332,340,550.42/20,934.99
  6. Step 6: Final answer
    x = 15,874.88

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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.