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Finding the Fourth Proportional to 21,885.75, 32,828.63 and 5,469.75

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Solution

The fourth proportional to 21,885.75, 32,828.63 and 5,469.75 is: 8,204.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885.75 : 32,828.63 = 5,469.75 : x
  2. Step 2: Convert to fraction form
    21,885.75/32,828.63 = 5,469.75/x
  3. Step 3: Cross multiply
    21,885.75x = 32,828.63 × 5,469.75
  4. Step 4: Simplify right side
    21,885.75x = 179,564,371.59
  5. Step 5: Solve for x
    x = 179,564,371.59/21,885.75
  6. Step 6: Final answer
    x = 8,204.63

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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.