Home / 28,815.44-39,765.48-18,209.84

Finding the Fourth Proportional to 28,815.44, 39,765.48 and 18,209.84

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Solution

The fourth proportional to 28,815.44, 39,765.48 and 18,209.84 is: 25,129.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.44 : 39,765.48 = 18,209.84 : x
  2. Step 2: Convert to fraction form
    28,815.44/39,765.48 = 18,209.84/x
  3. Step 3: Cross multiply
    28,815.44x = 39,765.48 × 18,209.84
  4. Step 4: Simplify right side
    28,815.44x = 724,123,028.32
  5. Step 5: Solve for x
    x = 724,123,028.32/28,815.44
  6. Step 6: Final answer
    x = 25,129.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.