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Finding the Fourth Proportional to 27,920.77, 41,880.48 and 6,860.77

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Solution

The fourth proportional to 27,920.77, 41,880.48 and 6,860.77 is: 10,290.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,920.77 : 41,880.48 = 6,860.77 : x
  2. Step 2: Convert to fraction form
    27,920.77/41,880.48 = 6,860.77/x
  3. Step 3: Cross multiply
    27,920.77x = 41,880.48 × 6,860.77
  4. Step 4: Simplify right side
    27,920.77x = 287,332,340.77
  5. Step 5: Solve for x
    x = 287,332,340.77/27,920.77
  6. Step 6: Final answer
    x = 10,290.99

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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.