Home / 11,815.20-17,717.16-6,886.26

Finding the Fourth Proportional to 11,815.20, 17,717.16 and 6,886.26

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Solution

The fourth proportional to 11,815.20, 17,717.16 and 6,886.26 is: 10,326.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.20 : 17,717.16 = 6,886.26 : x
  2. Step 2: Convert to fraction form
    11,815.20/17,717.16 = 6,886.26/x
  3. Step 3: Cross multiply
    11,815.20x = 17,717.16 × 6,886.26
  4. Step 4: Simplify right side
    11,815.20x = 122,004,970.22
  5. Step 5: Solve for x
    x = 122,004,970.22/11,815.20
  6. Step 6: Final answer
    x = 10,326.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.