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Finding the Fourth Proportional to 20,798.82, 28,701 and 11,847.24

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Solution

The fourth proportional to 20,798.82, 28,701 and 11,847.24 is: 16,348.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.82 : 28,701 = 11,847.24 : x
  2. Step 2: Convert to fraction form
    20,798.82/28,701 = 11,847.24/x
  3. Step 3: Cross multiply
    20,798.82x = 28,701 × 11,847.24
  4. Step 4: Simplify right side
    20,798.82x = 340,027,635.24
  5. Step 5: Solve for x
    x = 340,027,635.24/20,798.82
  6. Step 6: Final answer
    x = 16,348.41

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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.