Home / 11,009.13-15,195.32-6,761.21

Finding the Fourth Proportional to 11,009.13, 15,195.32 and 6,761.21

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Solution

The fourth proportional to 11,009.13, 15,195.32 and 6,761.21 is: 9,332.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,009.13 : 15,195.32 = 6,761.21 : x
  2. Step 2: Convert to fraction form
    11,009.13/15,195.32 = 6,761.21/x
  3. Step 3: Cross multiply
    11,009.13x = 15,195.32 × 6,761.21
  4. Step 4: Simplify right side
    11,009.13x = 102,738,749.54
  5. Step 5: Solve for x
    x = 102,738,749.54/11,009.13
  6. Step 6: Final answer
    x = 9,332.14

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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.