Home / 13,739.50-18,959.60-7,688.72

Finding the Fourth Proportional to 13,739.50, 18,959.60 and 7,688.72

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Solution

The fourth proportional to 13,739.50, 18,959.60 and 7,688.72 is: 10,609.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.50 : 18,959.60 = 7,688.72 : x
  2. Step 2: Convert to fraction form
    13,739.50/18,959.60 = 7,688.72/x
  3. Step 3: Cross multiply
    13,739.50x = 18,959.60 × 7,688.72
  4. Step 4: Simplify right side
    13,739.50x = 145,775,122.33
  5. Step 5: Solve for x
    x = 145,775,122.33/13,739.50
  6. Step 6: Final answer
    x = 10,609.93

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