Home / 11,138.30-16,707.45-7,201.70

Finding the Fourth Proportional to 11,138.30, 16,707.45 and 7,201.70

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Solution

The fourth proportional to 11,138.30, 16,707.45 and 7,201.70 is: 10,802.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.30 : 16,707.45 = 7,201.70 : x
  2. Step 2: Convert to fraction form
    11,138.30/16,707.45 = 7,201.70/x
  3. Step 3: Cross multiply
    11,138.30x = 16,707.45 × 7,201.70
  4. Step 4: Simplify right side
    11,138.30x = 120,322,042.67
  5. Step 5: Solve for x
    x = 120,322,042.67/11,138.30
  6. Step 6: Final answer
    x = 10,802.55

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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.