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Finding the Fourth Proportional to 18,131.79, 27,047.01 and 17,831.07

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Solution

The fourth proportional to 18,131.79, 27,047.01 and 17,831.07 is: 26,598.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.79 : 27,047.01 = 17,831.07 : x
  2. Step 2: Convert to fraction form
    18,131.79/27,047.01 = 17,831.07/x
  3. Step 3: Cross multiply
    18,131.79x = 27,047.01 × 17,831.07
  4. Step 4: Simplify right side
    18,131.79x = 482,277,128.60
  5. Step 5: Solve for x
    x = 482,277,128.60/18,131.79
  6. Step 6: Final answer
    x = 26,598.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.