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Finding the Fourth Proportional to 18,714.99, 25,831.02 and 12,342.73

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Solution

The fourth proportional to 18,714.99, 25,831.02 and 12,342.73 is: 17,035.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,714.99 : 25,831.02 = 12,342.73 : x
  2. Step 2: Convert to fraction form
    18,714.99/25,831.02 = 12,342.73/x
  3. Step 3: Cross multiply
    18,714.99x = 25,831.02 × 12,342.73
  4. Step 4: Simplify right side
    18,714.99x = 318,825,305.48
  5. Step 5: Solve for x
    x = 318,825,305.48/18,714.99
  6. Step 6: Final answer
    x = 17,035.83

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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.