Home / 10,611.96-15,917.80-6,453.11

Finding the Fourth Proportional to 10,611.96, 15,917.80 and 6,453.11

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Solution

The fourth proportional to 10,611.96, 15,917.80 and 6,453.11 is: 9,679.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,611.96 : 15,917.80 = 6,453.11 : x
  2. Step 2: Convert to fraction form
    10,611.96/15,917.80 = 6,453.11/x
  3. Step 3: Cross multiply
    10,611.96x = 15,917.80 × 6,453.11
  4. Step 4: Simplify right side
    10,611.96x = 102,719,314.36
  5. Step 5: Solve for x
    x = 102,719,314.36/10,611.96
  6. Step 6: Final answer
    x = 9,679.58

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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.