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Finding the Fourth Proportional to 30,831.75, 42,547.82 and 16,684.70

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Solution

The fourth proportional to 30,831.75, 42,547.82 and 16,684.70 is: 23,024.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,831.75 : 42,547.82 = 16,684.70 : x
  2. Step 2: Convert to fraction form
    30,831.75/42,547.82 = 16,684.70/x
  3. Step 3: Cross multiply
    30,831.75x = 42,547.82 × 16,684.70
  4. Step 4: Simplify right side
    30,831.75x = 709,897,316.19
  5. Step 5: Solve for x
    x = 709,897,316.19/30,831.75
  6. Step 6: Final answer
    x = 23,024.88

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