Home / 15,764.36-21,754.52-8,691.44

Finding the Fourth Proportional to 15,764.36, 21,754.52 and 8,691.44

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Solution

The fourth proportional to 15,764.36, 21,754.52 and 8,691.44 is: 11,994.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,764.36 : 21,754.52 = 8,691.44 : x
  2. Step 2: Convert to fraction form
    15,764.36/21,754.52 = 8,691.44/x
  3. Step 3: Cross multiply
    15,764.36x = 21,754.52 × 8,691.44
  4. Step 4: Simplify right side
    15,764.36x = 189,078,105.31
  5. Step 5: Solve for x
    x = 189,078,105.31/15,764.36
  6. Step 6: Final answer
    x = 11,994.02

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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.