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Finding the Fourth Proportional to 25,785.69, 38,684.60 and 8,015.44

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Solution

The fourth proportional to 25,785.69, 38,684.60 and 8,015.44 is: 12,025.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,785.69 : 38,684.60 = 8,015.44 : x
  2. Step 2: Convert to fraction form
    25,785.69/38,684.60 = 8,015.44/x
  3. Step 3: Cross multiply
    25,785.69x = 38,684.60 × 8,015.44
  4. Step 4: Simplify right side
    25,785.69x = 310,074,090.22
  5. Step 5: Solve for x
    x = 310,074,090.22/25,785.69
  6. Step 6: Final answer
    x = 12,025.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.