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Finding the Fourth Proportional to 43,997.56, 65,997.60 and 15,920.20

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Solution

The fourth proportional to 43,997.56, 65,997.60 and 15,920.20 is: 23,880.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,997.56 : 65,997.60 = 15,920.20 : x
  2. Step 2: Convert to fraction form
    43,997.56/65,997.60 = 15,920.20/x
  3. Step 3: Cross multiply
    43,997.56x = 65,997.60 × 15,920.20
  4. Step 4: Simplify right side
    43,997.56x = 1,050,694,991.52
  5. Step 5: Solve for x
    x = 1,050,694,991.52/43,997.56
  6. Step 6: Final answer
    x = 23,880.76

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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.