Home / 11,917.68-17,875.62-4,895.78

Finding the Fourth Proportional to 11,917.68, 17,875.62 and 4,895.78

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Solution

The fourth proportional to 11,917.68, 17,875.62 and 4,895.78 is: 7,343.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,917.68 : 17,875.62 = 4,895.78 : x
  2. Step 2: Convert to fraction form
    11,917.68/17,875.62 = 4,895.78/x
  3. Step 3: Cross multiply
    11,917.68x = 17,875.62 × 4,895.78
  4. Step 4: Simplify right side
    11,917.68x = 87,515,102.88
  5. Step 5: Solve for x
    x = 87,515,102.88/11,917.68
  6. Step 6: Final answer
    x = 7,343.30

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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.