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Finding the Fourth Proportional to 9,915.81, 14,876.19 and 6,999.81

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Solution

The fourth proportional to 9,915.81, 14,876.19 and 6,999.81 is: 10,501.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.81 : 14,876.19 = 6,999.81 : x
  2. Step 2: Convert to fraction form
    9,915.81/14,876.19 = 6,999.81/x
  3. Step 3: Cross multiply
    9,915.81x = 14,876.19 × 6,999.81
  4. Step 4: Simplify right side
    9,915.81x = 104,130,503.52
  5. Step 5: Solve for x
    x = 104,130,503.52/9,915.81
  6. Step 6: Final answer
    x = 10,501.46

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