Home / 13,640.49-20,456.37-5,318.48

Finding the Fourth Proportional to 13,640.49, 20,456.37 and 5,318.48

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Solution

The fourth proportional to 13,640.49, 20,456.37 and 5,318.48 is: 7,976.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640.49 : 20,456.37 = 5,318.48 : x
  2. Step 2: Convert to fraction form
    13,640.49/20,456.37 = 5,318.48/x
  3. Step 3: Cross multiply
    13,640.49x = 20,456.37 × 5,318.48
  4. Step 4: Simplify right side
    13,640.49x = 108,796,692.44
  5. Step 5: Solve for x
    x = 108,796,692.44/13,640.49
  6. Step 6: Final answer
    x = 7,976.01

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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.