Home / 11,775.20-16,249.65-6,397.58

Finding the Fourth Proportional to 11,775.20, 16,249.65 and 6,397.58

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Solution

The fourth proportional to 11,775.20, 16,249.65 and 6,397.58 is: 8,828.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,775.20 : 16,249.65 = 6,397.58 : x
  2. Step 2: Convert to fraction form
    11,775.20/16,249.65 = 6,397.58/x
  3. Step 3: Cross multiply
    11,775.20x = 16,249.65 × 6,397.58
  4. Step 4: Simplify right side
    11,775.20x = 103,958,354.60
  5. Step 5: Solve for x
    x = 103,958,354.60/11,775.20
  6. Step 6: Final answer
    x = 8,828.59

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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.