Home / 20,819.26-28,730.46-11,867.14

Finding the Fourth Proportional to 20,819.26, 28,730.46 and 11,867.14

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Solution

The fourth proportional to 20,819.26, 28,730.46 and 11,867.14 is: 16,376.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819.26 : 28,730.46 = 11,867.14 : x
  2. Step 2: Convert to fraction form
    20,819.26/28,730.46 = 11,867.14/x
  3. Step 3: Cross multiply
    20,819.26x = 28,730.46 × 11,867.14
  4. Step 4: Simplify right side
    20,819.26x = 340,948,391.08
  5. Step 5: Solve for x
    x = 340,948,391.08/20,819.26
  6. Step 6: Final answer
    x = 16,376.59

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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.