Home / 28,847.91-39,778.74-18,757.64

Finding the Fourth Proportional to 28,847.91, 39,778.74 and 18,757.64

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Solution

The fourth proportional to 28,847.91, 39,778.74 and 18,757.64 is: 25,865.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,847.91 : 39,778.74 = 18,757.64 : x
  2. Step 2: Convert to fraction form
    28,847.91/39,778.74 = 18,757.64/x
  3. Step 3: Cross multiply
    28,847.91x = 39,778.74 × 18,757.64
  4. Step 4: Simplify right side
    28,847.91x = 746,155,235.76
  5. Step 5: Solve for x
    x = 746,155,235.76/28,847.91
  6. Step 6: Final answer
    x = 25,865.14

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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.