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Finding the Fourth Proportional to 31,737.72, 43,767.84 and 18,988.86

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Solution

The fourth proportional to 31,737.72, 43,767.84 and 18,988.86 is: 26,186.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,737.72 : 43,767.84 = 18,988.86 : x
  2. Step 2: Convert to fraction form
    31,737.72/43,767.84 = 18,988.86/x
  3. Step 3: Cross multiply
    31,737.72x = 43,767.84 × 18,988.86
  4. Step 4: Simplify right side
    31,737.72x = 831,101,386.26
  5. Step 5: Solve for x
    x = 831,101,386.26/31,737.72
  6. Step 6: Final answer
    x = 26,186.55

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