Home / 7,139.27-10,685.61-6,457.25

Finding the Fourth Proportional to 7,139.27, 10,685.61 and 6,457.25

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Solution

The fourth proportional to 7,139.27, 10,685.61 and 6,457.25 is: 9,664.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.27 : 10,685.61 = 6,457.25 : x
  2. Step 2: Convert to fraction form
    7,139.27/10,685.61 = 6,457.25/x
  3. Step 3: Cross multiply
    7,139.27x = 10,685.61 × 6,457.25
  4. Step 4: Simplify right side
    7,139.27x = 68,999,681.89
  5. Step 5: Solve for x
    x = 68,999,681.89/7,139.27
  6. Step 6: Final answer
    x = 9,664.81

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