Home / 12,857.22-19,281.70-4,090.09

Finding the Fourth Proportional to 12,857.22, 19,281.70 and 4,090.09

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Solution

The fourth proportional to 12,857.22, 19,281.70 and 4,090.09 is: 6,133.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.22 : 19,281.70 = 4,090.09 : x
  2. Step 2: Convert to fraction form
    12,857.22/19,281.70 = 4,090.09/x
  3. Step 3: Cross multiply
    12,857.22x = 19,281.70 × 4,090.09
  4. Step 4: Simplify right side
    12,857.22x = 78,863,771.49
  5. Step 5: Solve for x
    x = 78,863,771.49/12,857.22
  6. Step 6: Final answer
    x = 6,133.81

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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.