Home / 16,428.48-22,662.88-11,121.44

Finding the Fourth Proportional to 16,428.48, 22,662.88 and 11,121.44

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Solution

The fourth proportional to 16,428.48, 22,662.88 and 11,121.44 is: 15,341.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,428.48 : 22,662.88 = 11,121.44 : x
  2. Step 2: Convert to fraction form
    16,428.48/22,662.88 = 11,121.44/x
  3. Step 3: Cross multiply
    16,428.48x = 22,662.88 × 11,121.44
  4. Step 4: Simplify right side
    16,428.48x = 252,043,860.15
  5. Step 5: Solve for x
    x = 252,043,860.15/16,428.48
  6. Step 6: Final answer
    x = 15,341.89

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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.