Home / 11,455.53-15,808.50-6,419.96

Finding the Fourth Proportional to 11,455.53, 15,808.50 and 6,419.96

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Solution

The fourth proportional to 11,455.53, 15,808.50 and 6,419.96 is: 8,859.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.53 : 15,808.50 = 6,419.96 : x
  2. Step 2: Convert to fraction form
    11,455.53/15,808.50 = 6,419.96/x
  3. Step 3: Cross multiply
    11,455.53x = 15,808.50 × 6,419.96
  4. Step 4: Simplify right side
    11,455.53x = 101,489,917.90
  5. Step 5: Solve for x
    x = 101,489,917.90/11,455.53
  6. Step 6: Final answer
    x = 8,859.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.