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Finding the Fourth Proportional to 13,708.92, 20,574.20 and 7,045.15

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Solution

The fourth proportional to 13,708.92, 20,574.20 and 7,045.15 is: 10,573.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,708.92 : 20,574.20 = 7,045.15 : x
  2. Step 2: Convert to fraction form
    13,708.92/20,574.20 = 7,045.15/x
  3. Step 3: Cross multiply
    13,708.92x = 20,574.20 × 7,045.15
  4. Step 4: Simplify right side
    13,708.92x = 144,948,325.13
  5. Step 5: Solve for x
    x = 144,948,325.13/13,708.92
  6. Step 6: Final answer
    x = 10,573.29

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