Home / 18,405.96-25,369.89-13,021.44

Finding the Fourth Proportional to 18,405.96, 25,369.89 and 13,021.44

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Solution

The fourth proportional to 18,405.96, 25,369.89 and 13,021.44 is: 17,948.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405.96 : 25,369.89 = 13,021.44 : x
  2. Step 2: Convert to fraction form
    18,405.96/25,369.89 = 13,021.44/x
  3. Step 3: Cross multiply
    18,405.96x = 25,369.89 × 13,021.44
  4. Step 4: Simplify right side
    18,405.96x = 330,352,500.44
  5. Step 5: Solve for x
    x = 330,352,500.44/18,405.96
  6. Step 6: Final answer
    x = 17,948.13

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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.