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Finding the Fourth Proportional to 17,383.45, 23,990.64 and 9,831.12

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Solution

The fourth proportional to 17,383.45, 23,990.64 and 9,831.12 is: 13,567.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,383.45 : 23,990.64 = 9,831.12 : x
  2. Step 2: Convert to fraction form
    17,383.45/23,990.64 = 9,831.12/x
  3. Step 3: Cross multiply
    17,383.45x = 23,990.64 × 9,831.12
  4. Step 4: Simplify right side
    17,383.45x = 235,854,691.61
  5. Step 5: Solve for x
    x = 235,854,691.61/17,383.45
  6. Step 6: Final answer
    x = 13,567.78

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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.