Home / 11,871.24-17,789.85-6,666.18

Finding the Fourth Proportional to 11,871.24, 17,789.85 and 6,666.18

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Solution

The fourth proportional to 11,871.24, 17,789.85 and 6,666.18 is: 9,989.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,871.24 : 17,789.85 = 6,666.18 : x
  2. Step 2: Convert to fraction form
    11,871.24/17,789.85 = 6,666.18/x
  3. Step 3: Cross multiply
    11,871.24x = 17,789.85 × 6,666.18
  4. Step 4: Simplify right side
    11,871.24x = 118,590,342.27
  5. Step 5: Solve for x
    x = 118,590,342.27/11,871.24
  6. Step 6: Final answer
    x = 9,989.72

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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.