Home / 11,157.45-15,395.99-6,680.58

Finding the Fourth Proportional to 11,157.45, 15,395.99 and 6,680.58

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Solution

The fourth proportional to 11,157.45, 15,395.99 and 6,680.58 is: 9,218.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.45 : 15,395.99 = 6,680.58 : x
  2. Step 2: Convert to fraction form
    11,157.45/15,395.99 = 6,680.58/x
  3. Step 3: Cross multiply
    11,157.45x = 15,395.99 × 6,680.58
  4. Step 4: Simplify right side
    11,157.45x = 102,854,109.47
  5. Step 5: Solve for x
    x = 102,854,109.47/11,157.45
  6. Step 6: Final answer
    x = 9,218.42

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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.