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Finding the Fourth Proportional to 13,390.86, 20,087.16 and 4,624.63

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Solution

The fourth proportional to 13,390.86, 20,087.16 and 4,624.63 is: 6,937.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.86 : 20,087.16 = 4,624.63 : x
  2. Step 2: Convert to fraction form
    13,390.86/20,087.16 = 4,624.63/x
  3. Step 3: Cross multiply
    13,390.86x = 20,087.16 × 4,624.63
  4. Step 4: Simplify right side
    13,390.86x = 92,895,682.75
  5. Step 5: Solve for x
    x = 92,895,682.75/13,390.86
  6. Step 6: Final answer
    x = 6,937.25

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