Home / 12,190.25-18,270.38-9,714.89

Finding the Fourth Proportional to 12,190.25, 18,270.38 and 9,714.89

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Solution

The fourth proportional to 12,190.25, 18,270.38 and 9,714.89 is: 14,560.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.25 : 18,270.38 = 9,714.89 : x
  2. Step 2: Convert to fraction form
    12,190.25/18,270.38 = 9,714.89/x
  3. Step 3: Cross multiply
    12,190.25x = 18,270.38 × 9,714.89
  4. Step 4: Simplify right side
    12,190.25x = 177,494,664.89
  5. Step 5: Solve for x
    x = 177,494,664.89/12,190.25
  6. Step 6: Final answer
    x = 14,560.39

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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.