Home / 11,155.26-15,393.68-6,439.26

Finding the Fourth Proportional to 11,155.26, 15,393.68 and 6,439.26

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Solution

The fourth proportional to 11,155.26, 15,393.68 and 6,439.26 is: 8,885.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.26 : 15,393.68 = 6,439.26 : x
  2. Step 2: Convert to fraction form
    11,155.26/15,393.68 = 6,439.26/x
  3. Step 3: Cross multiply
    11,155.26x = 15,393.68 × 6,439.26
  4. Step 4: Simplify right side
    11,155.26x = 99,123,907.88
  5. Step 5: Solve for x
    x = 99,123,907.88/11,155.26
  6. Step 6: Final answer
    x = 8,885.84

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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.