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Finding the Fourth Proportional to 18,662.67, 28,023.17 and 17,831.61

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Solution

The fourth proportional to 18,662.67, 28,023.17 and 17,831.61 is: 26,775.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.67 : 28,023.17 = 17,831.61 : x
  2. Step 2: Convert to fraction form
    18,662.67/28,023.17 = 17,831.61/x
  3. Step 3: Cross multiply
    18,662.67x = 28,023.17 × 17,831.61
  4. Step 4: Simplify right side
    18,662.67x = 499,698,149.25
  5. Step 5: Solve for x
    x = 499,698,149.25/18,662.67
  6. Step 6: Final answer
    x = 26,775.28

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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.