Home / 12,664.85-18,996.81-3,899.53

Finding the Fourth Proportional to 12,664.85, 18,996.81 and 3,899.53

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Solution

The fourth proportional to 12,664.85, 18,996.81 and 3,899.53 is: 5,849.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.85 : 18,996.81 = 3,899.53 : x
  2. Step 2: Convert to fraction form
    12,664.85/18,996.81 = 3,899.53/x
  3. Step 3: Cross multiply
    12,664.85x = 18,996.81 × 3,899.53
  4. Step 4: Simplify right side
    12,664.85x = 74,078,661.56
  5. Step 5: Solve for x
    x = 74,078,661.56/12,664.85
  6. Step 6: Final answer
    x = 5,849.16

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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.