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Finding the Fourth Proportional to 16,989.86, 23,446.15 and 9,914.90

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Solution

The fourth proportional to 16,989.86, 23,446.15 and 9,914.90 is: 13,682.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,989.86 : 23,446.15 = 9,914.90 : x
  2. Step 2: Convert to fraction form
    16,989.86/23,446.15 = 9,914.90/x
  3. Step 3: Cross multiply
    16,989.86x = 23,446.15 × 9,914.90
  4. Step 4: Simplify right side
    16,989.86x = 232,466,090.62
  5. Step 5: Solve for x
    x = 232,466,090.62/16,989.86
  6. Step 6: Final answer
    x = 13,682.64

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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.