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Finding the Fourth Proportional to 31,304, 43,203.36 and 18,056

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Solution

The fourth proportional to 31,304, 43,203.36 and 18,056 is: 24,919.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,304 : 43,203.36 = 18,056 : x
  2. Step 2: Convert to fraction form
    31,304/43,203.36 = 18,056/x
  3. Step 3: Cross multiply
    31,304x = 43,203.36 × 18,056
  4. Step 4: Simplify right side
    31,304x = 780,079,868.16
  5. Step 5: Solve for x
    x = 780,079,868.16/31,304
  6. Step 6: Final answer
    x = 24,919.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.