Home / 20,628.57-30,942.80-5,046.20

Finding the Fourth Proportional to 20,628.57, 30,942.80 and 5,046.20

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Solution

The fourth proportional to 20,628.57, 30,942.80 and 5,046.20 is: 7,569.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.57 : 30,942.80 = 5,046.20 : x
  2. Step 2: Convert to fraction form
    20,628.57/30,942.80 = 5,046.20/x
  3. Step 3: Cross multiply
    20,628.57x = 30,942.80 × 5,046.20
  4. Step 4: Simplify right side
    20,628.57x = 156,143,377.42
  5. Step 5: Solve for x
    x = 156,143,377.42/20,628.57
  6. Step 6: Final answer
    x = 7,569.28

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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.