Home / 12,685.18-19,021.77-3,797.08

Finding the Fourth Proportional to 12,685.18, 19,021.77 and 3,797.08

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Solution

The fourth proportional to 12,685.18, 19,021.77 and 3,797.08 is: 5,693.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,685.18 : 19,021.77 = 3,797.08 : x
  2. Step 2: Convert to fraction form
    12,685.18/19,021.77 = 3,797.08/x
  3. Step 3: Cross multiply
    12,685.18x = 19,021.77 × 3,797.08
  4. Step 4: Simplify right side
    12,685.18x = 72,227,241.87
  5. Step 5: Solve for x
    x = 72,227,241.87/12,685.18
  6. Step 6: Final answer
    x = 5,693.83

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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.