Home / 31,626.21-43,680.96-20,997.39

Finding the Fourth Proportional to 31,626.21, 43,680.96 and 20,997.39

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Solution

The fourth proportional to 31,626.21, 43,680.96 and 20,997.39 is: 29,000.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,626.21 : 43,680.96 = 20,997.39 : x
  2. Step 2: Convert to fraction form
    31,626.21/43,680.96 = 20,997.39/x
  3. Step 3: Cross multiply
    31,626.21x = 43,680.96 × 20,997.39
  4. Step 4: Simplify right side
    31,626.21x = 917,186,152.69
  5. Step 5: Solve for x
    x = 917,186,152.69/31,626.21
  6. Step 6: Final answer
    x = 29,000.82

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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.