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Finding the Fourth Proportional to 21,921.95, 32,850.03 and 13,147.22

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Solution

The fourth proportional to 21,921.95, 32,850.03 and 13,147.22 is: 19,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.95 : 32,850.03 = 13,147.22 : x
  2. Step 2: Convert to fraction form
    21,921.95/32,850.03 = 13,147.22/x
  3. Step 3: Cross multiply
    21,921.95x = 32,850.03 × 13,147.22
  4. Step 4: Simplify right side
    21,921.95x = 431,886,571.42
  5. Step 5: Solve for x
    x = 431,886,571.42/21,921.95
  6. Step 6: Final answer
    x = 19,701.10

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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.