Home / 18,622.80-27,896.40-11,581.20

Finding the Fourth Proportional to 18,622.80, 27,896.40 and 11,581.20

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Solution

The fourth proportional to 18,622.80, 27,896.40 and 11,581.20 is: 17,348.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.80 : 27,896.40 = 11,581.20 : x
  2. Step 2: Convert to fraction form
    18,622.80/27,896.40 = 11,581.20/x
  3. Step 3: Cross multiply
    18,622.80x = 27,896.40 × 11,581.20
  4. Step 4: Simplify right side
    18,622.80x = 323,073,787.68
  5. Step 5: Solve for x
    x = 323,073,787.68/18,622.80
  6. Step 6: Final answer
    x = 17,348.29

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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.