Home / 12,720.66-19,078.83-3,484.50

Finding the Fourth Proportional to 12,720.66, 19,078.83 and 3,484.50

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Solution

The fourth proportional to 12,720.66, 19,078.83 and 3,484.50 is: 5,226.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.66 : 19,078.83 = 3,484.50 : x
  2. Step 2: Convert to fraction form
    12,720.66/19,078.83 = 3,484.50/x
  3. Step 3: Cross multiply
    12,720.66x = 19,078.83 × 3,484.50
  4. Step 4: Simplify right side
    12,720.66x = 66,480,183.14
  5. Step 5: Solve for x
    x = 66,480,183.14/12,720.66
  6. Step 6: Final answer
    x = 5,226.16

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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.