Home / 20,772.62-31,166.22-12,972.32

Finding the Fourth Proportional to 20,772.62, 31,166.22 and 12,972.32

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Solution

The fourth proportional to 20,772.62, 31,166.22 and 12,972.32 is: 19,463.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.62 : 31,166.22 = 12,972.32 : x
  2. Step 2: Convert to fraction form
    20,772.62/31,166.22 = 12,972.32/x
  3. Step 3: Cross multiply
    20,772.62x = 31,166.22 × 12,972.32
  4. Step 4: Simplify right side
    20,772.62x = 404,298,179.03
  5. Step 5: Solve for x
    x = 404,298,179.03/20,772.62
  6. Step 6: Final answer
    x = 19,463.03

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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.