Home / 12,855.07-19,282.61-4,089.99

Finding the Fourth Proportional to 12,855.07, 19,282.61 and 4,089.99

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Solution

The fourth proportional to 12,855.07, 19,282.61 and 4,089.99 is: 6,134.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.07 : 19,282.61 = 4,089.99 : x
  2. Step 2: Convert to fraction form
    12,855.07/19,282.61 = 4,089.99/x
  3. Step 3: Cross multiply
    12,855.07x = 19,282.61 × 4,089.99
  4. Step 4: Simplify right side
    12,855.07x = 78,865,682.07
  5. Step 5: Solve for x
    x = 78,865,682.07/12,855.07
  6. Step 6: Final answer
    x = 6,134.99

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Similar ratio
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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.