Home / 19,974.82-29,980.63-10,120.96

Finding the Fourth Proportional to 19,974.82, 29,980.63 and 10,120.96

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Solution

The fourth proportional to 19,974.82, 29,980.63 and 10,120.96 is: 15,190.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,974.82 : 29,980.63 = 10,120.96 : x
  2. Step 2: Convert to fraction form
    19,974.82/29,980.63 = 10,120.96/x
  3. Step 3: Cross multiply
    19,974.82x = 29,980.63 × 10,120.96
  4. Step 4: Simplify right side
    19,974.82x = 303,432,757.00
  5. Step 5: Solve for x
    x = 303,432,757.00/19,974.82
  6. Step 6: Final answer
    x = 15,190.76

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1.5x scale

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.