Home / 12,876.08-19,309.56-5,481.20

Finding the Fourth Proportional to 12,876.08, 19,309.56 and 5,481.20

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Solution

The fourth proportional to 12,876.08, 19,309.56 and 5,481.20 is: 8,219.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.08 : 19,309.56 = 5,481.20 : x
  2. Step 2: Convert to fraction form
    12,876.08/19,309.56 = 5,481.20/x
  3. Step 3: Cross multiply
    12,876.08x = 19,309.56 × 5,481.20
  4. Step 4: Simplify right side
    12,876.08x = 105,839,560.27
  5. Step 5: Solve for x
    x = 105,839,560.27/12,876.08
  6. Step 6: Final answer
    x = 8,219.86

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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.