Home / 12,855.78-19,272.30-5,062.80

Finding the Fourth Proportional to 12,855.78, 19,272.30 and 5,062.80

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Solution

The fourth proportional to 12,855.78, 19,272.30 and 5,062.80 is: 7,589.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.78 : 19,272.30 = 5,062.80 : x
  2. Step 2: Convert to fraction form
    12,855.78/19,272.30 = 5,062.80/x
  3. Step 3: Cross multiply
    12,855.78x = 19,272.30 × 5,062.80
  4. Step 4: Simplify right side
    12,855.78x = 97,571,800.44
  5. Step 5: Solve for x
    x = 97,571,800.44/12,855.78
  6. Step 6: Final answer
    x = 7,589.72

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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.