Home / 11,155.70-15,398.25-6,443.30

Finding the Fourth Proportional to 11,155.70, 15,398.25 and 6,443.30

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Solution

The fourth proportional to 11,155.70, 15,398.25 and 6,443.30 is: 8,893.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.70 : 15,398.25 = 6,443.30 : x
  2. Step 2: Convert to fraction form
    11,155.70/15,398.25 = 6,443.30/x
  3. Step 3: Cross multiply
    11,155.70x = 15,398.25 × 6,443.30
  4. Step 4: Simplify right side
    11,155.70x = 99,215,544.23
  5. Step 5: Solve for x
    x = 99,215,544.23/11,155.70
  6. Step 6: Final answer
    x = 8,893.71

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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.