Home / 10,388.88-15,557.40-6,481.44

Finding the Fourth Proportional to 10,388.88, 15,557.40 and 6,481.44

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Solution

The fourth proportional to 10,388.88, 15,557.40 and 6,481.44 is: 9,705.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,388.88 : 15,557.40 = 6,481.44 : x
  2. Step 2: Convert to fraction form
    10,388.88/15,557.40 = 6,481.44/x
  3. Step 3: Cross multiply
    10,388.88x = 15,557.40 × 6,481.44
  4. Step 4: Simplify right side
    10,388.88x = 100,834,354.66
  5. Step 5: Solve for x
    x = 100,834,354.66/10,388.88
  6. Step 6: Final answer
    x = 9,705.99

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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.