Home / 11,986.15-16,540.98-6,681.31

Finding the Fourth Proportional to 11,986.15, 16,540.98 and 6,681.31

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Solution

The fourth proportional to 11,986.15, 16,540.98 and 6,681.31 is: 9,220.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.15 : 16,540.98 = 6,681.31 : x
  2. Step 2: Convert to fraction form
    11,986.15/16,540.98 = 6,681.31/x
  3. Step 3: Cross multiply
    11,986.15x = 16,540.98 × 6,681.31
  4. Step 4: Simplify right side
    11,986.15x = 110,515,451.57
  5. Step 5: Solve for x
    x = 110,515,451.57/11,986.15
  6. Step 6: Final answer
    x = 9,220.26

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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.