Home / 15,456.93-21,331.64-8,742.61

Finding the Fourth Proportional to 15,456.93, 21,331.64 and 8,742.61

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Solution

The fourth proportional to 15,456.93, 21,331.64 and 8,742.61 is: 12,065.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.93 : 21,331.64 = 8,742.61 : x
  2. Step 2: Convert to fraction form
    15,456.93/21,331.64 = 8,742.61/x
  3. Step 3: Cross multiply
    15,456.93x = 21,331.64 × 8,742.61
  4. Step 4: Simplify right side
    15,456.93x = 186,494,209.18
  5. Step 5: Solve for x
    x = 186,494,209.18/15,456.93
  6. Step 6: Final answer
    x = 12,065.41

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