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Finding the Fourth Proportional to 39,995.62, 59,994.42 and 10,414.78

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Solution

The fourth proportional to 39,995.62, 59,994.42 and 10,414.78 is: 15,622.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,995.62 : 59,994.42 = 10,414.78 : x
  2. Step 2: Convert to fraction form
    39,995.62/59,994.42 = 10,414.78/x
  3. Step 3: Cross multiply
    39,995.62x = 59,994.42 × 10,414.78
  4. Step 4: Simplify right side
    39,995.62x = 624,828,685.53
  5. Step 5: Solve for x
    x = 624,828,685.53/39,995.62
  6. Step 6: Final answer
    x = 15,622.43

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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.