Home / 28,765.28-39,695.10-16,187.60

Finding the Fourth Proportional to 28,765.28, 39,695.10 and 16,187.60

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Solution

The fourth proportional to 28,765.28, 39,695.10 and 16,187.60 is: 22,338.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,765.28 : 39,695.10 = 16,187.60 : x
  2. Step 2: Convert to fraction form
    28,765.28/39,695.10 = 16,187.60/x
  3. Step 3: Cross multiply
    28,765.28x = 39,695.10 × 16,187.60
  4. Step 4: Simplify right side
    28,765.28x = 642,568,202.28
  5. Step 5: Solve for x
    x = 642,568,202.28/28,765.28
  6. Step 6: Final answer
    x = 22,338.33

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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.