Home / 20,884.70-31,326.21-6,845.78

Finding the Fourth Proportional to 20,884.70, 31,326.21 and 6,845.78

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Solution

The fourth proportional to 20,884.70, 31,326.21 and 6,845.78 is: 10,268.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.70 : 31,326.21 = 6,845.78 : x
  2. Step 2: Convert to fraction form
    20,884.70/31,326.21 = 6,845.78/x
  3. Step 3: Cross multiply
    20,884.70x = 31,326.21 × 6,845.78
  4. Step 4: Simplify right side
    20,884.70x = 214,452,341.89
  5. Step 5: Solve for x
    x = 214,452,341.89/20,884.70
  6. Step 6: Final answer
    x = 10,268.39

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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.