Home / 11,979.09-16,526.43-8,002.80

Finding the Fourth Proportional to 11,979.09, 16,526.43 and 8,002.80

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Solution

The fourth proportional to 11,979.09, 16,526.43 and 8,002.80 is: 11,040.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.09 : 16,526.43 = 8,002.80 : x
  2. Step 2: Convert to fraction form
    11,979.09/16,526.43 = 8,002.80/x
  3. Step 3: Cross multiply
    11,979.09x = 16,526.43 × 8,002.80
  4. Step 4: Simplify right side
    11,979.09x = 132,257,714.00
  5. Step 5: Solve for x
    x = 132,257,714.00/11,979.09
  6. Step 6: Final answer
    x = 11,040.71

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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.