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Finding the Fourth Proportional to 25,167, 34,731.54 and 13,989

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Solution

The fourth proportional to 25,167, 34,731.54 and 13,989 is: 19,305.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,167 : 34,731.54 = 13,989 : x
  2. Step 2: Convert to fraction form
    25,167/34,731.54 = 13,989/x
  3. Step 3: Cross multiply
    25,167x = 34,731.54 × 13,989
  4. Step 4: Simplify right side
    25,167x = 485,859,513.06
  5. Step 5: Solve for x
    x = 485,859,513.06/25,167
  6. Step 6: Final answer
    x = 19,305.42

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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.