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Finding the Fourth Proportional to 31,996.84, 44,169.76 and 20,671.84

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Solution

The fourth proportional to 31,996.84, 44,169.76 and 20,671.84 is: 28,536.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,996.84 : 44,169.76 = 20,671.84 : x
  2. Step 2: Convert to fraction form
    31,996.84/44,169.76 = 20,671.84/x
  3. Step 3: Cross multiply
    31,996.84x = 44,169.76 × 20,671.84
  4. Step 4: Simplify right side
    31,996.84x = 913,070,211.56
  5. Step 5: Solve for x
    x = 913,070,211.56/31,996.84
  6. Step 6: Final answer
    x = 28,536.26

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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.