Home / 13,946.55-20,919.75-5,181.45

Finding the Fourth Proportional to 13,946.55, 20,919.75 and 5,181.45

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Solution

The fourth proportional to 13,946.55, 20,919.75 and 5,181.45 is: 7,772.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,946.55 : 20,919.75 = 5,181.45 : x
  2. Step 2: Convert to fraction form
    13,946.55/20,919.75 = 5,181.45/x
  3. Step 3: Cross multiply
    13,946.55x = 20,919.75 × 5,181.45
  4. Step 4: Simplify right side
    13,946.55x = 108,394,638.64
  5. Step 5: Solve for x
    x = 108,394,638.64/13,946.55
  6. Step 6: Final answer
    x = 7,772.15

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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.