Home / 18,331.40-27,410.70-13,665.80

Finding the Fourth Proportional to 18,331.40, 27,410.70 and 13,665.80

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Solution

The fourth proportional to 18,331.40, 27,410.70 and 13,665.80 is: 20,434.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,331.40 : 27,410.70 = 13,665.80 : x
  2. Step 2: Convert to fraction form
    18,331.40/27,410.70 = 13,665.80/x
  3. Step 3: Cross multiply
    18,331.40x = 27,410.70 × 13,665.80
  4. Step 4: Simplify right side
    18,331.40x = 374,589,144.06
  5. Step 5: Solve for x
    x = 374,589,144.06/18,331.40
  6. Step 6: Final answer
    x = 20,434.29

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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.