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Finding the Fourth Proportional to 39,611, 59,442.42 and 14,987

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Solution

The fourth proportional to 39,611, 59,442.42 and 14,987 is: 22,490.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,611 : 59,442.42 = 14,987 : x
  2. Step 2: Convert to fraction form
    39,611/59,442.42 = 14,987/x
  3. Step 3: Cross multiply
    39,611x = 59,442.42 × 14,987
  4. Step 4: Simplify right side
    39,611x = 890,863,548.54
  5. Step 5: Solve for x
    x = 890,863,548.54/39,611
  6. Step 6: Final answer
    x = 22,490.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.