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Finding the Fourth Proportional to 39,609, 59,439.42 and 14,985

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Solution

The fourth proportional to 39,609, 59,439.42 and 14,985 is: 22,487.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,609 : 59,439.42 = 14,985 : x
  2. Step 2: Convert to fraction form
    39,609/59,439.42 = 14,985/x
  3. Step 3: Cross multiply
    39,609x = 59,439.42 × 14,985
  4. Step 4: Simplify right side
    39,609x = 890,699,708.70
  5. Step 5: Solve for x
    x = 890,699,708.70/39,609
  6. Step 6: Final answer
    x = 22,487.31

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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.