Home / 11,104.80-15,326.30-6,388.78

Finding the Fourth Proportional to 11,104.80, 15,326.30 and 6,388.78

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Solution

The fourth proportional to 11,104.80, 15,326.30 and 6,388.78 is: 8,817.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,104.80 : 15,326.30 = 6,388.78 : x
  2. Step 2: Convert to fraction form
    11,104.80/15,326.30 = 6,388.78/x
  3. Step 3: Cross multiply
    11,104.80x = 15,326.30 × 6,388.78
  4. Step 4: Simplify right side
    11,104.80x = 97,916,358.91
  5. Step 5: Solve for x
    x = 97,916,358.91/11,104.80
  6. Step 6: Final answer
    x = 8,817.48

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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.