Home / 20,628.57-30,940.11-5,838.78

Finding the Fourth Proportional to 20,628.57, 30,940.11 and 5,838.78

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Solution

The fourth proportional to 20,628.57, 30,940.11 and 5,838.78 is: 8,757.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.57 : 30,940.11 = 5,838.78 : x
  2. Step 2: Convert to fraction form
    20,628.57/30,940.11 = 5,838.78/x
  3. Step 3: Cross multiply
    20,628.57x = 30,940.11 × 5,838.78
  4. Step 4: Simplify right side
    20,628.57x = 180,652,495.47
  5. Step 5: Solve for x
    x = 180,652,495.47/20,628.57
  6. Step 6: Final answer
    x = 8,757.39

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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.