Home / 39,072.57-58,640.28-20,358.18

Finding the Fourth Proportional to 39,072.57, 58,640.28 and 20,358.18

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Solution

The fourth proportional to 39,072.57, 58,640.28 and 20,358.18 is: 30,553.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,072.57 : 58,640.28 = 20,358.18 : x
  2. Step 2: Convert to fraction form
    39,072.57/58,640.28 = 20,358.18/x
  3. Step 3: Cross multiply
    39,072.57x = 58,640.28 × 20,358.18
  4. Step 4: Simplify right side
    39,072.57x = 1,193,809,375.49
  5. Step 5: Solve for x
    x = 1,193,809,375.49/39,072.57
  6. Step 6: Final answer
    x = 30,553.64

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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.