Home / 19,993.20-29,958.48-13,418.16

Finding the Fourth Proportional to 19,993.20, 29,958.48 and 13,418.16

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Solution

The fourth proportional to 19,993.20, 29,958.48 and 13,418.16 is: 20,106.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.20 : 29,958.48 = 13,418.16 : x
  2. Step 2: Convert to fraction form
    19,993.20/29,958.48 = 13,418.16/x
  3. Step 3: Cross multiply
    19,993.20x = 29,958.48 × 13,418.16
  4. Step 4: Simplify right side
    19,993.20x = 401,987,678.00
  5. Step 5: Solve for x
    x = 401,987,678.00/19,993.20
  6. Step 6: Final answer
    x = 20,106.22

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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.