Home / 11,919.12-16,449.02-6,613.80

Finding the Fourth Proportional to 11,919.12, 16,449.02 and 6,613.80

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Solution

The fourth proportional to 11,919.12, 16,449.02 and 6,613.80 is: 9,127.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.12 : 16,449.02 = 6,613.80 : x
  2. Step 2: Convert to fraction form
    11,919.12/16,449.02 = 6,613.80/x
  3. Step 3: Cross multiply
    11,919.12x = 16,449.02 × 6,613.80
  4. Step 4: Simplify right side
    11,919.12x = 108,790,528.48
  5. Step 5: Solve for x
    x = 108,790,528.48/11,919.12
  6. Step 6: Final answer
    x = 9,127.40

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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.