Home / 28,357.16-39,092.58-20,396.84

Finding the Fourth Proportional to 28,357.16, 39,092.58 and 20,396.84

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Solution

The fourth proportional to 28,357.16, 39,092.58 and 20,396.84 is: 28,118.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.16 : 39,092.58 = 20,396.84 : x
  2. Step 2: Convert to fraction form
    28,357.16/39,092.58 = 20,396.84/x
  3. Step 3: Cross multiply
    28,357.16x = 39,092.58 × 20,396.84
  4. Step 4: Simplify right side
    28,357.16x = 797,365,099.45
  5. Step 5: Solve for x
    x = 797,365,099.45/28,357.16
  6. Step 6: Final answer
    x = 28,118.65

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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.