Home / 21,604.56-29,811.96-13,219.44

Finding the Fourth Proportional to 21,604.56, 29,811.96 and 13,219.44

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Solution

The fourth proportional to 21,604.56, 29,811.96 and 13,219.44 is: 18,241.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,604.56 : 29,811.96 = 13,219.44 : x
  2. Step 2: Convert to fraction form
    21,604.56/29,811.96 = 13,219.44/x
  3. Step 3: Cross multiply
    21,604.56x = 29,811.96 × 13,219.44
  4. Step 4: Simplify right side
    21,604.56x = 394,097,416.50
  5. Step 5: Solve for x
    x = 394,097,416.50/21,604.56
  6. Step 6: Final answer
    x = 18,241.40

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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.