Home / 13,945.83-20,917.22-4,085.21

Finding the Fourth Proportional to 13,945.83, 20,917.22 and 4,085.21

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Solution

The fourth proportional to 13,945.83, 20,917.22 and 4,085.21 is: 6,127.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.83 : 20,917.22 = 4,085.21 : x
  2. Step 2: Convert to fraction form
    13,945.83/20,917.22 = 4,085.21/x
  3. Step 3: Cross multiply
    13,945.83x = 20,917.22 × 4,085.21
  4. Step 4: Simplify right side
    13,945.83x = 85,451,111.30
  5. Step 5: Solve for x
    x = 85,451,111.30/13,945.83
  6. Step 6: Final answer
    x = 6,127.36

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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.