Home / 12,621.98-18,921.29-4,824.54

Finding the Fourth Proportional to 12,621.98, 18,921.29 and 4,824.54

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Solution

The fourth proportional to 12,621.98, 18,921.29 and 4,824.54 is: 7,232.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.98 : 18,921.29 = 4,824.54 : x
  2. Step 2: Convert to fraction form
    12,621.98/18,921.29 = 4,824.54/x
  3. Step 3: Cross multiply
    12,621.98x = 18,921.29 × 4,824.54
  4. Step 4: Simplify right side
    12,621.98x = 91,286,520.46
  5. Step 5: Solve for x
    x = 91,286,520.46/12,621.98
  6. Step 6: Final answer
    x = 7,232.35

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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.