Home / 11,926.80-16,459.20-6,621.84

Finding the Fourth Proportional to 11,926.80, 16,459.20 and 6,621.84

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Solution

The fourth proportional to 11,926.80, 16,459.20 and 6,621.84 is: 9,138.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,926.80 : 16,459.20 = 6,621.84 : x
  2. Step 2: Convert to fraction form
    11,926.80/16,459.20 = 6,621.84/x
  3. Step 3: Cross multiply
    11,926.80x = 16,459.20 × 6,621.84
  4. Step 4: Simplify right side
    11,926.80x = 108,990,188.93
  5. Step 5: Solve for x
    x = 108,990,188.93/11,926.80
  6. Step 6: Final answer
    x = 9,138.26

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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.