Home / 13,732.40-20,631.48-8,811.68

Finding the Fourth Proportional to 13,732.40, 20,631.48 and 8,811.68

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Solution

The fourth proportional to 13,732.40, 20,631.48 and 8,811.68 is: 13,238.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,732.40 : 20,631.48 = 8,811.68 : x
  2. Step 2: Convert to fraction form
    13,732.40/20,631.48 = 8,811.68/x
  3. Step 3: Cross multiply
    13,732.40x = 20,631.48 × 8,811.68
  4. Step 4: Simplify right side
    13,732.40x = 181,797,999.69
  5. Step 5: Solve for x
    x = 181,797,999.69/13,732.40
  6. Step 6: Final answer
    x = 13,238.62

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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.