Home / 13,121.73-19,672.20-6,544.53

Finding the Fourth Proportional to 13,121.73, 19,672.20 and 6,544.53

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Solution

The fourth proportional to 13,121.73, 19,672.20 and 6,544.53 is: 9,811.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.73 : 19,672.20 = 6,544.53 : x
  2. Step 2: Convert to fraction form
    13,121.73/19,672.20 = 6,544.53/x
  3. Step 3: Cross multiply
    13,121.73x = 19,672.20 × 6,544.53
  4. Step 4: Simplify right side
    13,121.73x = 128,745,303.07
  5. Step 5: Solve for x
    x = 128,745,303.07/13,121.73
  6. Step 6: Final answer
    x = 9,811.61

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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.