Home / 31,469.32-43,445.64-20,873.35

Finding the Fourth Proportional to 31,469.32, 43,445.64 and 20,873.35

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Solution

The fourth proportional to 31,469.32, 43,445.64 and 20,873.35 is: 28,817.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,469.32 : 43,445.64 = 20,873.35 : x
  2. Step 2: Convert to fraction form
    31,469.32/43,445.64 = 20,873.35/x
  3. Step 3: Cross multiply
    31,469.32x = 43,445.64 × 20,873.35
  4. Step 4: Simplify right side
    31,469.32x = 906,856,049.69
  5. Step 5: Solve for x
    x = 906,856,049.69/31,469.32
  6. Step 6: Final answer
    x = 28,817.15

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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.