Home / 20,327.73-30,491.23-8,487.87

Finding the Fourth Proportional to 20,327.73, 30,491.23 and 8,487.87

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Solution

The fourth proportional to 20,327.73, 30,491.23 and 8,487.87 is: 12,731.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,327.73 : 30,491.23 = 8,487.87 : x
  2. Step 2: Convert to fraction form
    20,327.73/30,491.23 = 8,487.87/x
  3. Step 3: Cross multiply
    20,327.73x = 30,491.23 × 8,487.87
  4. Step 4: Simplify right side
    20,327.73x = 258,805,651.39
  5. Step 5: Solve for x
    x = 258,805,651.39/20,327.73
  6. Step 6: Final answer
    x = 12,731.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.