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Finding the Fourth Proportional to 43,996.40, 65,951.40 and 21,813.20

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Solution

The fourth proportional to 43,996.40, 65,951.40 and 21,813.20 is: 32,698.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,996.40 : 65,951.40 = 21,813.20 : x
  2. Step 2: Convert to fraction form
    43,996.40/65,951.40 = 21,813.20/x
  3. Step 3: Cross multiply
    43,996.40x = 65,951.40 × 21,813.20
  4. Step 4: Simplify right side
    43,996.40x = 1,438,611,078.48
  5. Step 5: Solve for x
    x = 1,438,611,078.48/43,996.40
  6. Step 6: Final answer
    x = 32,698.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.