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Finding the Fourth Proportional to 18,055.54, 27,083.31 and 7,660.54

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Solution

The fourth proportional to 18,055.54, 27,083.31 and 7,660.54 is: 11,490.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,055.54 : 27,083.31 = 7,660.54 : x
  2. Step 2: Convert to fraction form
    18,055.54/27,083.31 = 7,660.54/x
  3. Step 3: Cross multiply
    18,055.54x = 27,083.31 × 7,660.54
  4. Step 4: Simplify right side
    18,055.54x = 207,472,779.59
  5. Step 5: Solve for x
    x = 207,472,779.59/18,055.54
  6. Step 6: Final answer
    x = 11,490.81

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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.