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Finding the Fourth Proportional to 16,989.38, 23,445.05 and 9,435.42

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Solution

The fourth proportional to 16,989.38, 23,445.05 and 9,435.42 is: 13,020.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,989.38 : 23,445.05 = 9,435.42 : x
  2. Step 2: Convert to fraction form
    16,989.38/23,445.05 = 9,435.42/x
  3. Step 3: Cross multiply
    16,989.38x = 23,445.05 × 9,435.42
  4. Step 4: Simplify right side
    16,989.38x = 221,213,846.49
  5. Step 5: Solve for x
    x = 221,213,846.49/16,989.38
  6. Step 6: Final answer
    x = 13,020.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.