Home / 13,991.40-20,982.69-4,629.29

Finding the Fourth Proportional to 13,991.40, 20,982.69 and 4,629.29

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Solution

The fourth proportional to 13,991.40, 20,982.69 and 4,629.29 is: 6,942.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.40 : 20,982.69 = 4,629.29 : x
  2. Step 2: Convert to fraction form
    13,991.40/20,982.69 = 4,629.29/x
  3. Step 3: Cross multiply
    13,991.40x = 20,982.69 × 4,629.29
  4. Step 4: Simplify right side
    13,991.40x = 97,134,852.08
  5. Step 5: Solve for x
    x = 97,134,852.08/13,991.40
  6. Step 6: Final answer
    x = 6,942.47

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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.