Home / 12,178.73-18,271.26-3,858.86

Finding the Fourth Proportional to 12,178.73, 18,271.26 and 3,858.86

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Solution

The fourth proportional to 12,178.73, 18,271.26 and 3,858.86 is: 5,789.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.73 : 18,271.26 = 3,858.86 : x
  2. Step 2: Convert to fraction form
    12,178.73/18,271.26 = 3,858.86/x
  3. Step 3: Cross multiply
    12,178.73x = 18,271.26 × 3,858.86
  4. Step 4: Simplify right side
    12,178.73x = 70,506,143.01
  5. Step 5: Solve for x
    x = 70,506,143.01/12,178.73
  6. Step 6: Final answer
    x = 5,789.29

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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.