Home / 20,956.44-28,898.46-13,880.28

Finding the Fourth Proportional to 20,956.44, 28,898.46 and 13,880.28

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Solution

The fourth proportional to 20,956.44, 28,898.46 and 13,880.28 is: 19,140.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.44 : 28,898.46 = 13,880.28 : x
  2. Step 2: Convert to fraction form
    20,956.44/28,898.46 = 13,880.28/x
  3. Step 3: Cross multiply
    20,956.44x = 28,898.46 × 13,880.28
  4. Step 4: Simplify right side
    20,956.44x = 401,118,716.37
  5. Step 5: Solve for x
    x = 401,118,716.37/20,956.44
  6. Step 6: Final answer
    x = 19,140.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.