Home / 9,911.92-13,679.96-6,135.72

Finding the Fourth Proportional to 9,911.92, 13,679.96 and 6,135.72

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Solution

The fourth proportional to 9,911.92, 13,679.96 and 6,135.72 is: 8,468.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.92 : 13,679.96 = 6,135.72 : x
  2. Step 2: Convert to fraction form
    9,911.92/13,679.96 = 6,135.72/x
  3. Step 3: Cross multiply
    9,911.92x = 13,679.96 × 6,135.72
  4. Step 4: Simplify right side
    9,911.92x = 83,936,404.17
  5. Step 5: Solve for x
    x = 83,936,404.17/9,911.92
  6. Step 6: Final answer
    x = 8,468.23

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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.