Home / 54,004.72-81,006.96-18,954.40

Finding the Fourth Proportional to 54,004.72, 81,006.96 and 18,954.40

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Solution

The fourth proportional to 54,004.72, 81,006.96 and 18,954.40 is: 28,431.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,004.72 : 81,006.96 = 18,954.40 : x
  2. Step 2: Convert to fraction form
    54,004.72/81,006.96 = 18,954.40/x
  3. Step 3: Cross multiply
    54,004.72x = 81,006.96 × 18,954.40
  4. Step 4: Simplify right side
    54,004.72x = 1,535,438,322.62
  5. Step 5: Solve for x
    x = 1,535,438,322.62/54,004.72
  6. Step 6: Final answer
    x = 28,431.56

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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.