Home / 20,158.59-27,819.77-11,205.98

Finding the Fourth Proportional to 20,158.59, 27,819.77 and 11,205.98

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Solution

The fourth proportional to 20,158.59, 27,819.77 and 11,205.98 is: 15,464.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.59 : 27,819.77 = 11,205.98 : x
  2. Step 2: Convert to fraction form
    20,158.59/27,819.77 = 11,205.98/x
  3. Step 3: Cross multiply
    20,158.59x = 27,819.77 × 11,205.98
  4. Step 4: Simplify right side
    20,158.59x = 311,747,591.10
  5. Step 5: Solve for x
    x = 311,747,591.10/20,158.59
  6. Step 6: Final answer
    x = 15,464.75

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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.