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Finding the Fourth Proportional to 11,995.91, 18,009.48 and 8,064.77

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Solution

The fourth proportional to 11,995.91, 18,009.48 and 8,064.77 is: 12,107.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,995.91 : 18,009.48 = 8,064.77 : x
  2. Step 2: Convert to fraction form
    11,995.91/18,009.48 = 8,064.77/x
  3. Step 3: Cross multiply
    11,995.91x = 18,009.48 × 8,064.77
  4. Step 4: Simplify right side
    11,995.91x = 145,242,314.02
  5. Step 5: Solve for x
    x = 145,242,314.02/11,995.91
  6. Step 6: Final answer
    x = 12,107.66

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1.5x scale

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.