Home / 20,806.20-28,715.18-11,853.24

Finding the Fourth Proportional to 20,806.20, 28,715.18 and 11,853.24

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Solution

The fourth proportional to 20,806.20, 28,715.18 and 11,853.24 is: 16,358.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.20 : 28,715.18 = 11,853.24 : x
  2. Step 2: Convert to fraction form
    20,806.20/28,715.18 = 11,853.24/x
  3. Step 3: Cross multiply
    20,806.20x = 28,715.18 × 11,853.24
  4. Step 4: Simplify right side
    20,806.20x = 340,367,920.18
  5. Step 5: Solve for x
    x = 340,367,920.18/20,806.20
  6. Step 6: Final answer
    x = 16,358.97

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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.