Home / 14,112.20-21,168.30-13,305.80

Finding the Fourth Proportional to 14,112.20, 21,168.30 and 13,305.80

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Solution

The fourth proportional to 14,112.20, 21,168.30 and 13,305.80 is: 19,958.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,112.20 : 21,168.30 = 13,305.80 : x
  2. Step 2: Convert to fraction form
    14,112.20/21,168.30 = 13,305.80/x
  3. Step 3: Cross multiply
    14,112.20x = 21,168.30 × 13,305.80
  4. Step 4: Simplify right side
    14,112.20x = 281,661,166.14
  5. Step 5: Solve for x
    x = 281,661,166.14/14,112.20
  6. Step 6: Final answer
    x = 19,958.70

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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.