Home / 21,771.54-30,051.12-14,219.03

Finding the Fourth Proportional to 21,771.54, 30,051.12 and 14,219.03

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Solution

The fourth proportional to 21,771.54, 30,051.12 and 14,219.03 is: 19,626.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.54 : 30,051.12 = 14,219.03 : x
  2. Step 2: Convert to fraction form
    21,771.54/30,051.12 = 14,219.03/x
  3. Step 3: Cross multiply
    21,771.54x = 30,051.12 × 14,219.03
  4. Step 4: Simplify right side
    21,771.54x = 427,297,626.56
  5. Step 5: Solve for x
    x = 427,297,626.56/21,771.54
  6. Step 6: Final answer
    x = 19,626.43

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1.5x scale

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.