Home / 14,920.28-20,588.82-8,631.44

Finding the Fourth Proportional to 14,920.28, 20,588.82 and 8,631.44

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Solution

The fourth proportional to 14,920.28, 20,588.82 and 8,631.44 is: 11,910.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920.28 : 20,588.82 = 8,631.44 : x
  2. Step 2: Convert to fraction form
    14,920.28/20,588.82 = 8,631.44/x
  3. Step 3: Cross multiply
    14,920.28x = 20,588.82 × 8,631.44
  4. Step 4: Simplify right side
    14,920.28x = 177,711,164.50
  5. Step 5: Solve for x
    x = 177,711,164.50/14,920.28
  6. Step 6: Final answer
    x = 11,910.71

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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.