Home / 20,228.85-27,926.10-12,679.65

Finding the Fourth Proportional to 20,228.85, 27,926.10 and 12,679.65

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Solution

The fourth proportional to 20,228.85, 27,926.10 and 12,679.65 is: 17,504.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.85 : 27,926.10 = 12,679.65 : x
  2. Step 2: Convert to fraction form
    20,228.85/27,926.10 = 12,679.65/x
  3. Step 3: Cross multiply
    20,228.85x = 27,926.10 × 12,679.65
  4. Step 4: Simplify right side
    20,228.85x = 354,093,173.87
  5. Step 5: Solve for x
    x = 354,093,173.87/20,228.85
  6. Step 6: Final answer
    x = 17,504.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.