Home / 20,945.44-31,428.42-9,851.68

Finding the Fourth Proportional to 20,945.44, 31,428.42 and 9,851.68

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Solution

The fourth proportional to 20,945.44, 31,428.42 and 9,851.68 is: 14,782.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.44 : 31,428.42 = 9,851.68 : x
  2. Step 2: Convert to fraction form
    20,945.44/31,428.42 = 9,851.68/x
  3. Step 3: Cross multiply
    20,945.44x = 31,428.42 × 9,851.68
  4. Step 4: Simplify right side
    20,945.44x = 309,622,736.75
  5. Step 5: Solve for x
    x = 309,622,736.75/20,945.44
  6. Step 6: Final answer
    x = 14,782.35

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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.