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Finding the Fourth Proportional to 21,485.96, 32,230.49 and 8,993.42

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Solution

The fourth proportional to 21,485.96, 32,230.49 and 8,993.42 is: 13,490.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,485.96 : 32,230.49 = 8,993.42 : x
  2. Step 2: Convert to fraction form
    21,485.96/32,230.49 = 8,993.42/x
  3. Step 3: Cross multiply
    21,485.96x = 32,230.49 × 8,993.42
  4. Step 4: Simplify right side
    21,485.96x = 289,862,333.38
  5. Step 5: Solve for x
    x = 289,862,333.38/21,485.96
  6. Step 6: Final answer
    x = 13,490.78

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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.