Home / 11,367.74-15,695.22-7,120.56

Finding the Fourth Proportional to 11,367.74, 15,695.22 and 7,120.56

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Solution

The fourth proportional to 11,367.74, 15,695.22 and 7,120.56 is: 9,831.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,367.74 : 15,695.22 = 7,120.56 : x
  2. Step 2: Convert to fraction form
    11,367.74/15,695.22 = 7,120.56/x
  3. Step 3: Cross multiply
    11,367.74x = 15,695.22 × 7,120.56
  4. Step 4: Simplify right side
    11,367.74x = 111,758,712.94
  5. Step 5: Solve for x
    x = 111,758,712.94/11,367.74
  6. Step 6: Final answer
    x = 9,831.21

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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.