Home / 20,216.97-30,331.32-8,368.56

Finding the Fourth Proportional to 20,216.97, 30,331.32 and 8,368.56

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Solution

The fourth proportional to 20,216.97, 30,331.32 and 8,368.56 is: 12,555.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.97 : 30,331.32 = 8,368.56 : x
  2. Step 2: Convert to fraction form
    20,216.97/30,331.32 = 8,368.56/x
  3. Step 3: Cross multiply
    20,216.97x = 30,331.32 × 8,368.56
  4. Step 4: Simplify right side
    20,216.97x = 253,829,471.30
  5. Step 5: Solve for x
    x = 253,829,471.30/20,216.97
  6. Step 6: Final answer
    x = 12,555.27

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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.