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Finding the Fourth Proportional to 11,891.56, 16,410.74 and 6,586.86

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Solution

The fourth proportional to 11,891.56, 16,410.74 and 6,586.86 is: 9,090.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.56 : 16,410.74 = 6,586.86 : x
  2. Step 2: Convert to fraction form
    11,891.56/16,410.74 = 6,586.86/x
  3. Step 3: Cross multiply
    11,891.56x = 16,410.74 × 6,586.86
  4. Step 4: Simplify right side
    11,891.56x = 108,095,246.88
  5. Step 5: Solve for x
    x = 108,095,246.88/11,891.56
  6. Step 6: Final answer
    x = 9,090.08

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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.