Home / 13,739.81-20,608.56-4,379.45

Finding the Fourth Proportional to 13,739.81, 20,608.56 and 4,379.45

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Solution

The fourth proportional to 13,739.81, 20,608.56 and 4,379.45 is: 6,568.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.81 : 20,608.56 = 4,379.45 : x
  2. Step 2: Convert to fraction form
    13,739.81/20,608.56 = 4,379.45/x
  3. Step 3: Cross multiply
    13,739.81x = 20,608.56 × 4,379.45
  4. Step 4: Simplify right side
    13,739.81x = 90,254,055.05
  5. Step 5: Solve for x
    x = 90,254,055.05/13,739.81
  6. Step 6: Final answer
    x = 6,568.80

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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.