Home / 27,870.98-41,812.85-12,078.66

Finding the Fourth Proportional to 27,870.98, 41,812.85 and 12,078.66

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Solution

The fourth proportional to 27,870.98, 41,812.85 and 12,078.66 is: 18,120.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,870.98 : 41,812.85 = 12,078.66 : x
  2. Step 2: Convert to fraction form
    27,870.98/41,812.85 = 12,078.66/x
  3. Step 3: Cross multiply
    27,870.98x = 41,812.85 × 12,078.66
  4. Step 4: Simplify right side
    27,870.98x = 505,042,989.72
  5. Step 5: Solve for x
    x = 505,042,989.72/27,870.98
  6. Step 6: Final answer
    x = 18,120.75

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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.