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Finding the Fourth Proportional to 31,960.86, 47,920.53 and 13,235.82

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Solution

The fourth proportional to 31,960.86, 47,920.53 and 13,235.82 is: 19,845.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,960.86 : 47,920.53 = 13,235.82 : x
  2. Step 2: Convert to fraction form
    31,960.86/47,920.53 = 13,235.82/x
  3. Step 3: Cross multiply
    31,960.86x = 47,920.53 × 13,235.82
  4. Step 4: Simplify right side
    31,960.86x = 634,267,509.38
  5. Step 5: Solve for x
    x = 634,267,509.38/31,960.86
  6. Step 6: Final answer
    x = 19,845.13

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