Home / 20,645.60-28,491.01-11,694.83

Finding the Fourth Proportional to 20,645.60, 28,491.01 and 11,694.83

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Solution

The fourth proportional to 20,645.60, 28,491.01 and 11,694.83 is: 16,138.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.60 : 28,491.01 = 11,694.83 : x
  2. Step 2: Convert to fraction form
    20,645.60/28,491.01 = 11,694.83/x
  3. Step 3: Cross multiply
    20,645.60x = 28,491.01 × 11,694.83
  4. Step 4: Simplify right side
    20,645.60x = 333,197,346.79
  5. Step 5: Solve for x
    x = 333,197,346.79/20,645.60
  6. Step 6: Final answer
    x = 16,138.91

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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.