Home / 18,285.45-27,422.56-7,755.28

Finding the Fourth Proportional to 18,285.45, 27,422.56 and 7,755.28

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Solution

The fourth proportional to 18,285.45, 27,422.56 and 7,755.28 is: 11,630.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.45 : 27,422.56 = 7,755.28 : x
  2. Step 2: Convert to fraction form
    18,285.45/27,422.56 = 7,755.28/x
  3. Step 3: Cross multiply
    18,285.45x = 27,422.56 × 7,755.28
  4. Step 4: Simplify right side
    18,285.45x = 212,669,631.12
  5. Step 5: Solve for x
    x = 212,669,631.12/18,285.45
  6. Step 6: Final answer
    x = 11,630.54

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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.