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Finding the Fourth Proportional to 16,989.58, 23,449.07 and 9,819.80

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Solution

The fourth proportional to 16,989.58, 23,449.07 and 9,819.80 is: 13,553.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,989.58 : 23,449.07 = 9,819.80 : x
  2. Step 2: Convert to fraction form
    16,989.58/23,449.07 = 9,819.80/x
  3. Step 3: Cross multiply
    16,989.58x = 23,449.07 × 9,819.80
  4. Step 4: Simplify right side
    16,989.58x = 230,265,177.59
  5. Step 5: Solve for x
    x = 230,265,177.59/16,989.58
  6. Step 6: Final answer
    x = 13,553.32

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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.