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Finding the Fourth Proportional to 21,863.78, 32,795.67 and 20,801.46

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Solution

The fourth proportional to 21,863.78, 32,795.67 and 20,801.46 is: 31,202.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.78 : 32,795.67 = 20,801.46 : x
  2. Step 2: Convert to fraction form
    21,863.78/32,795.67 = 20,801.46/x
  3. Step 3: Cross multiply
    21,863.78x = 32,795.67 × 20,801.46
  4. Step 4: Simplify right side
    21,863.78x = 682,197,862.66
  5. Step 5: Solve for x
    x = 682,197,862.66/21,863.78
  6. Step 6: Final answer
    x = 31,202.19

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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.