Home / 11,680.74-16,115.55-6,644.46

Finding the Fourth Proportional to 11,680.74, 16,115.55 and 6,644.46

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Solution

The fourth proportional to 11,680.74, 16,115.55 and 6,644.46 is: 9,167.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,680.74 : 16,115.55 = 6,644.46 : x
  2. Step 2: Convert to fraction form
    11,680.74/16,115.55 = 6,644.46/x
  3. Step 3: Cross multiply
    11,680.74x = 16,115.55 × 6,644.46
  4. Step 4: Simplify right side
    11,680.74x = 107,079,127.35
  5. Step 5: Solve for x
    x = 107,079,127.35/11,680.74
  6. Step 6: Final answer
    x = 9,167.15

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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.