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Finding the Fourth Proportional to 16,634.54, 22,958.64 and 9,920.60

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Solution

The fourth proportional to 16,634.54, 22,958.64 and 9,920.60 is: 13,692.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,634.54 : 22,958.64 = 9,920.60 : x
  2. Step 2: Convert to fraction form
    16,634.54/22,958.64 = 9,920.60/x
  3. Step 3: Cross multiply
    16,634.54x = 22,958.64 × 9,920.60
  4. Step 4: Simplify right side
    16,634.54x = 227,763,483.98
  5. Step 5: Solve for x
    x = 227,763,483.98/16,634.54
  6. Step 6: Final answer
    x = 13,692.20

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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.