Home / 28,815.70-43,223.55-7,755.79

Finding the Fourth Proportional to 28,815.70, 43,223.55 and 7,755.79

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Solution

The fourth proportional to 28,815.70, 43,223.55 and 7,755.79 is: 11,633.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.70 : 43,223.55 = 7,755.79 : x
  2. Step 2: Convert to fraction form
    28,815.70/43,223.55 = 7,755.79/x
  3. Step 3: Cross multiply
    28,815.70x = 43,223.55 × 7,755.79
  4. Step 4: Simplify right side
    28,815.70x = 335,232,668.80
  5. Step 5: Solve for x
    x = 335,232,668.80/28,815.70
  6. Step 6: Final answer
    x = 11,633.68

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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.