Home / 13,137.81-19,684.44-7,932.75

Finding the Fourth Proportional to 13,137.81, 19,684.44 and 7,932.75

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Solution

The fourth proportional to 13,137.81, 19,684.44 and 7,932.75 is: 11,885.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.81 : 19,684.44 = 7,932.75 : x
  2. Step 2: Convert to fraction form
    13,137.81/19,684.44 = 7,932.75/x
  3. Step 3: Cross multiply
    13,137.81x = 19,684.44 × 7,932.75
  4. Step 4: Simplify right side
    13,137.81x = 156,151,741.41
  5. Step 5: Solve for x
    x = 156,151,741.41/13,137.81
  6. Step 6: Final answer
    x = 11,885.68

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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.