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Finding the Fourth Proportional to 21,644.99, 32,442.90 and 9,157.22

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Solution

The fourth proportional to 21,644.99, 32,442.90 and 9,157.22 is: 13,725.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,644.99 : 32,442.90 = 9,157.22 : x
  2. Step 2: Convert to fraction form
    21,644.99/32,442.90 = 9,157.22/x
  3. Step 3: Cross multiply
    21,644.99x = 32,442.90 × 9,157.22
  4. Step 4: Simplify right side
    21,644.99x = 297,086,772.74
  5. Step 5: Solve for x
    x = 297,086,772.74/21,644.99
  6. Step 6: Final answer
    x = 13,725.43

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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.