Home / 11,681.90-16,121.04-6,376.76

Finding the Fourth Proportional to 11,681.90, 16,121.04 and 6,376.76

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Solution

The fourth proportional to 11,681.90, 16,121.04 and 6,376.76 is: 8,799.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.90 : 16,121.04 = 6,376.76 : x
  2. Step 2: Convert to fraction form
    11,681.90/16,121.04 = 6,376.76/x
  3. Step 3: Cross multiply
    11,681.90x = 16,121.04 × 6,376.76
  4. Step 4: Simplify right side
    11,681.90x = 102,800,003.03
  5. Step 5: Solve for x
    x = 102,800,003.03/11,681.90
  6. Step 6: Final answer
    x = 8,799.94

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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.