Home / 13,548.48-20,322.63-3,687.72

Finding the Fourth Proportional to 13,548.48, 20,322.63 and 3,687.72

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Solution

The fourth proportional to 13,548.48, 20,322.63 and 3,687.72 is: 5,531.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,548.48 : 20,322.63 = 3,687.72 : x
  2. Step 2: Convert to fraction form
    13,548.48/20,322.63 = 3,687.72/x
  3. Step 3: Cross multiply
    13,548.48x = 20,322.63 × 3,687.72
  4. Step 4: Simplify right side
    13,548.48x = 74,944,169.10
  5. Step 5: Solve for x
    x = 74,944,169.10/13,548.48
  6. Step 6: Final answer
    x = 5,531.56

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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.