Home / 11,991.32-16,548.10-6,686.48

Finding the Fourth Proportional to 11,991.32, 16,548.10 and 6,686.48

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Solution

The fourth proportional to 11,991.32, 16,548.10 and 6,686.48 is: 9,227.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.32 : 16,548.10 = 6,686.48 : x
  2. Step 2: Convert to fraction form
    11,991.32/16,548.10 = 6,686.48/x
  3. Step 3: Cross multiply
    11,991.32x = 16,548.10 × 6,686.48
  4. Step 4: Simplify right side
    11,991.32x = 110,648,440.23
  5. Step 5: Solve for x
    x = 110,648,440.23/11,991.32
  6. Step 6: Final answer
    x = 9,227.38

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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.