Home / 11,105.30-16,625.55-9,938.90

Finding the Fourth Proportional to 11,105.30, 16,625.55 and 9,938.90

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Solution

The fourth proportional to 11,105.30, 16,625.55 and 9,938.90 is: 14,879.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.30 : 16,625.55 = 9,938.90 : x
  2. Step 2: Convert to fraction form
    11,105.30/16,625.55 = 9,938.90/x
  3. Step 3: Cross multiply
    11,105.30x = 16,625.55 × 9,938.90
  4. Step 4: Simplify right side
    11,105.30x = 165,239,678.90
  5. Step 5: Solve for x
    x = 165,239,678.90/11,105.30
  6. Step 6: Final answer
    x = 14,879.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.