Home / 18,949.69-28,418.75-7,853.77

Finding the Fourth Proportional to 18,949.69, 28,418.75 and 7,853.77

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Solution

The fourth proportional to 18,949.69, 28,418.75 and 7,853.77 is: 11,778.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,949.69 : 28,418.75 = 7,853.77 : x
  2. Step 2: Convert to fraction form
    18,949.69/28,418.75 = 7,853.77/x
  3. Step 3: Cross multiply
    18,949.69x = 28,418.75 × 7,853.77
  4. Step 4: Simplify right side
    18,949.69x = 223,194,184.09
  5. Step 5: Solve for x
    x = 223,194,184.09/18,949.69
  6. Step 6: Final answer
    x = 11,778.25

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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.