Home / 20,730.60-31,072.79-8,247.29

Finding the Fourth Proportional to 20,730.60, 31,072.79 and 8,247.29

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Solution

The fourth proportional to 20,730.60, 31,072.79 and 8,247.29 is: 12,361.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.60 : 31,072.79 = 8,247.29 : x
  2. Step 2: Convert to fraction form
    20,730.60/31,072.79 = 8,247.29/x
  3. Step 3: Cross multiply
    20,730.60x = 31,072.79 × 8,247.29
  4. Step 4: Simplify right side
    20,730.60x = 256,266,175.49
  5. Step 5: Solve for x
    x = 256,266,175.49/20,730.60
  6. Step 6: Final answer
    x = 12,361.73

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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.