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Finding the Fourth Proportional to 31,797.59, 43,871.69 and 20,473.64

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Solution

The fourth proportional to 31,797.59, 43,871.69 and 20,473.64 is: 28,247.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,797.59 : 43,871.69 = 20,473.64 : x
  2. Step 2: Convert to fraction form
    31,797.59/43,871.69 = 20,473.64/x
  3. Step 3: Cross multiply
    31,797.59x = 43,871.69 × 20,473.64
  4. Step 4: Simplify right side
    31,797.59x = 898,212,865.52
  5. Step 5: Solve for x
    x = 898,212,865.52/31,797.59
  6. Step 6: Final answer
    x = 28,247.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.