Home / 18,855.48-28,292.94-7,770.36

Finding the Fourth Proportional to 18,855.48, 28,292.94 and 7,770.36

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Solution

The fourth proportional to 18,855.48, 28,292.94 and 7,770.36 is: 11,659.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.48 : 28,292.94 = 7,770.36 : x
  2. Step 2: Convert to fraction form
    18,855.48/28,292.94 = 7,770.36/x
  3. Step 3: Cross multiply
    18,855.48x = 28,292.94 × 7,770.36
  4. Step 4: Simplify right side
    18,855.48x = 219,846,329.26
  5. Step 5: Solve for x
    x = 219,846,329.26/18,855.48
  6. Step 6: Final answer
    x = 11,659.55

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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.