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Finding the Fourth Proportional to 21,917.20, 32,854.20 and 10,825.60

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Solution

The fourth proportional to 21,917.20, 32,854.20 and 10,825.60 is: 16,227.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,917.20 : 32,854.20 = 10,825.60 : x
  2. Step 2: Convert to fraction form
    21,917.20/32,854.20 = 10,825.60/x
  3. Step 3: Cross multiply
    21,917.20x = 32,854.20 × 10,825.60
  4. Step 4: Simplify right side
    21,917.20x = 355,666,427.52
  5. Step 5: Solve for x
    x = 355,666,427.52/21,917.20
  6. Step 6: Final answer
    x = 16,227.73

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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.