Home / 11,971.24-16,520.61-6,665.74

Finding the Fourth Proportional to 11,971.24, 16,520.61 and 6,665.74

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Solution

The fourth proportional to 11,971.24, 16,520.61 and 6,665.74 is: 9,198.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.24 : 16,520.61 = 6,665.74 : x
  2. Step 2: Convert to fraction form
    11,971.24/16,520.61 = 6,665.74/x
  3. Step 3: Cross multiply
    11,971.24x = 16,520.61 × 6,665.74
  4. Step 4: Simplify right side
    11,971.24x = 110,122,090.90
  5. Step 5: Solve for x
    x = 110,122,090.90/11,971.24
  6. Step 6: Final answer
    x = 9,198.89

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1.5x scale

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.