Home / 11,479.88-15,841.38-6,443.36

Finding the Fourth Proportional to 11,479.88, 15,841.38 and 6,443.36

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Solution

The fourth proportional to 11,479.88, 15,841.38 and 6,443.36 is: 8,891.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.88 : 15,841.38 = 6,443.36 : x
  2. Step 2: Convert to fraction form
    11,479.88/15,841.38 = 6,443.36/x
  3. Step 3: Cross multiply
    11,479.88x = 15,841.38 × 6,443.36
  4. Step 4: Simplify right side
    11,479.88x = 102,071,714.24
  5. Step 5: Solve for x
    x = 102,071,714.24/11,479.88
  6. Step 6: Final answer
    x = 8,891.36

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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.