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Finding the Fourth Proportional to 36,831.64, 55,247.42 and 9,129.64

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Solution

The fourth proportional to 36,831.64, 55,247.42 and 9,129.64 is: 13,694.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,831.64 : 55,247.42 = 9,129.64 : x
  2. Step 2: Convert to fraction form
    36,831.64/55,247.42 = 9,129.64/x
  3. Step 3: Cross multiply
    36,831.64x = 55,247.42 × 9,129.64
  4. Step 4: Simplify right side
    36,831.64x = 504,389,055.53
  5. Step 5: Solve for x
    x = 504,389,055.53/36,831.64
  6. Step 6: Final answer
    x = 13,694.45

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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.