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Finding the Fourth Proportional to 40,647.87, 60,956.46 and 13,986.30

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Solution

The fourth proportional to 40,647.87, 60,956.46 and 13,986.30 is: 20,974.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,647.87 : 60,956.46 = 13,986.30 : x
  2. Step 2: Convert to fraction form
    40,647.87/60,956.46 = 13,986.30/x
  3. Step 3: Cross multiply
    40,647.87x = 60,956.46 × 13,986.30
  4. Step 4: Simplify right side
    40,647.87x = 852,555,336.50
  5. Step 5: Solve for x
    x = 852,555,336.50/40,647.87
  6. Step 6: Final answer
    x = 20,974.17

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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.