Home / 13,435.09-20,144.82-9,879.34

Finding the Fourth Proportional to 13,435.09, 20,144.82 and 9,879.34

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Solution

The fourth proportional to 13,435.09, 20,144.82 and 9,879.34 is: 14,813.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.09 : 20,144.82 = 9,879.34 : x
  2. Step 2: Convert to fraction form
    13,435.09/20,144.82 = 9,879.34/x
  3. Step 3: Cross multiply
    13,435.09x = 20,144.82 × 9,879.34
  4. Step 4: Simplify right side
    13,435.09x = 199,017,425.29
  5. Step 5: Solve for x
    x = 199,017,425.29/13,435.09
  6. Step 6: Final answer
    x = 14,813.26

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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.