Home / 18,664.56-27,989.40-9,297.72

Finding the Fourth Proportional to 18,664.56, 27,989.40 and 9,297.72

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Solution

The fourth proportional to 18,664.56, 27,989.40 and 9,297.72 is: 13,942.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,664.56 : 27,989.40 = 9,297.72 : x
  2. Step 2: Convert to fraction form
    18,664.56/27,989.40 = 9,297.72/x
  3. Step 3: Cross multiply
    18,664.56x = 27,989.40 × 9,297.72
  4. Step 4: Simplify right side
    18,664.56x = 260,237,604.17
  5. Step 5: Solve for x
    x = 260,237,604.17/18,664.56
  6. Step 6: Final answer
    x = 13,942.87

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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.