Home / 13,809.06-20,696.31-6,885.54

Finding the Fourth Proportional to 13,809.06, 20,696.31 and 6,885.54

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Solution

The fourth proportional to 13,809.06, 20,696.31 and 6,885.54 is: 10,319.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.06 : 20,696.31 = 6,885.54 : x
  2. Step 2: Convert to fraction form
    13,809.06/20,696.31 = 6,885.54/x
  3. Step 3: Cross multiply
    13,809.06x = 20,696.31 × 6,885.54
  4. Step 4: Simplify right side
    13,809.06x = 142,505,270.36
  5. Step 5: Solve for x
    x = 142,505,270.36/13,809.06
  6. Step 6: Final answer
    x = 10,319.69

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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.