Home / 20,711.50-28,582.20-11,759.24

Finding the Fourth Proportional to 20,711.50, 28,582.20 and 11,759.24

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Solution

The fourth proportional to 20,711.50, 28,582.20 and 11,759.24 is: 16,227.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.50 : 28,582.20 = 11,759.24 : x
  2. Step 2: Convert to fraction form
    20,711.50/28,582.20 = 11,759.24/x
  3. Step 3: Cross multiply
    20,711.50x = 28,582.20 × 11,759.24
  4. Step 4: Simplify right side
    20,711.50x = 336,105,020.98
  5. Step 5: Solve for x
    x = 336,105,020.98/20,711.50
  6. Step 6: Final answer
    x = 16,227.94

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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.