Home / 28,765.68-39,697.56-16,190.64

Finding the Fourth Proportional to 28,765.68, 39,697.56 and 16,190.64

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Solution

The fourth proportional to 28,765.68, 39,697.56 and 16,190.64 is: 22,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,765.68 : 39,697.56 = 16,190.64 : x
  2. Step 2: Convert to fraction form
    28,765.68/39,697.56 = 16,190.64/x
  3. Step 3: Cross multiply
    28,765.68x = 39,697.56 × 16,190.64
  4. Step 4: Simplify right side
    28,765.68x = 642,728,902.84
  5. Step 5: Solve for x
    x = 642,728,902.84/28,765.68
  6. Step 6: Final answer
    x = 22,343.60

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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.