Home / 31,033.64-42,796.63-20,847.71

Finding the Fourth Proportional to 31,033.64, 42,796.63 and 20,847.71

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Solution

The fourth proportional to 31,033.64, 42,796.63 and 20,847.71 is: 28,749.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,033.64 : 42,796.63 = 20,847.71 : x
  2. Step 2: Convert to fraction form
    31,033.64/42,796.63 = 20,847.71/x
  3. Step 3: Cross multiply
    31,033.64x = 42,796.63 × 20,847.71
  4. Step 4: Simplify right side
    31,033.64x = 892,211,731.22
  5. Step 5: Solve for x
    x = 892,211,731.22/31,033.64
  6. Step 6: Final answer
    x = 28,749.83

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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.