Home / 12,855.06-19,285.38-4,090.68

Finding the Fourth Proportional to 12,855.06, 19,285.38 and 4,090.68

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Solution

The fourth proportional to 12,855.06, 19,285.38 and 4,090.68 is: 6,136.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.06 : 19,285.38 = 4,090.68 : x
  2. Step 2: Convert to fraction form
    12,855.06/19,285.38 = 4,090.68/x
  3. Step 3: Cross multiply
    12,855.06x = 19,285.38 × 4,090.68
  4. Step 4: Simplify right side
    12,855.06x = 78,890,318.26
  5. Step 5: Solve for x
    x = 78,890,318.26/12,855.06
  6. Step 6: Final answer
    x = 6,136.91

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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.