Home / 18,439.60-27,640.50-7,331.26

Finding the Fourth Proportional to 18,439.60, 27,640.50 and 7,331.26

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Solution

The fourth proportional to 18,439.60, 27,640.50 and 7,331.26 is: 10,989.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.60 : 27,640.50 = 7,331.26 : x
  2. Step 2: Convert to fraction form
    18,439.60/27,640.50 = 7,331.26/x
  3. Step 3: Cross multiply
    18,439.60x = 27,640.50 × 7,331.26
  4. Step 4: Simplify right side
    18,439.60x = 202,639,692.03
  5. Step 5: Solve for x
    x = 202,639,692.03/18,439.60
  6. Step 6: Final answer
    x = 10,989.38

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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.