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Finding the Fourth Proportional to 14,628.80, 21,910.80 and 12,036.80

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Solution

The fourth proportional to 14,628.80, 21,910.80 and 12,036.80 is: 18,028.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,628.80 : 21,910.80 = 12,036.80 : x
  2. Step 2: Convert to fraction form
    14,628.80/21,910.80 = 12,036.80/x
  3. Step 3: Cross multiply
    14,628.80x = 21,910.80 × 12,036.80
  4. Step 4: Simplify right side
    14,628.80x = 263,735,917.44
  5. Step 5: Solve for x
    x = 263,735,917.44/14,628.80
  6. Step 6: Final answer
    x = 18,028.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.