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Finding the Fourth Proportional to 39,665.52, 59,474.52 and 12,636.20

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Solution

The fourth proportional to 39,665.52, 59,474.52 and 12,636.20 is: 18,946.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,665.52 : 59,474.52 = 12,636.20 : x
  2. Step 2: Convert to fraction form
    39,665.52/59,474.52 = 12,636.20/x
  3. Step 3: Cross multiply
    39,665.52x = 59,474.52 × 12,636.20
  4. Step 4: Simplify right side
    39,665.52x = 751,531,929.62
  5. Step 5: Solve for x
    x = 751,531,929.62/39,665.52
  6. Step 6: Final answer
    x = 18,946.73

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1.5x scale

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.