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Finding the Fourth Proportional to 28,396.83, 42,595.24 and 7,620.33

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Solution

The fourth proportional to 28,396.83, 42,595.24 and 7,620.33 is: 11,430.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,396.83 : 42,595.24 = 7,620.33 : x
  2. Step 2: Convert to fraction form
    28,396.83/42,595.24 = 7,620.33/x
  3. Step 3: Cross multiply
    28,396.83x = 42,595.24 × 7,620.33
  4. Step 4: Simplify right side
    28,396.83x = 324,589,722.03
  5. Step 5: Solve for x
    x = 324,589,722.03/28,396.83
  6. Step 6: Final answer
    x = 11,430.49

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Similar ratio
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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.