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Finding the Fourth Proportional to 12,287.96, 18,431.93 and 3,053.96

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Solution

The fourth proportional to 12,287.96, 18,431.93 and 3,053.96 is: 4,580.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.96 : 18,431.93 = 3,053.96 : x
  2. Step 2: Convert to fraction form
    12,287.96/18,431.93 = 3,053.96/x
  3. Step 3: Cross multiply
    12,287.96x = 18,431.93 × 3,053.96
  4. Step 4: Simplify right side
    12,287.96x = 56,290,361.54
  5. Step 5: Solve for x
    x = 56,290,361.54/12,287.96
  6. Step 6: Final answer
    x = 4,580.94

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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.