Home / 18,968.31-26,161.47-12,162.98

Finding the Fourth Proportional to 18,968.31, 26,161.47 and 12,162.98

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Solution

The fourth proportional to 18,968.31, 26,161.47 and 12,162.98 is: 16,775.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.31 : 26,161.47 = 12,162.98 : x
  2. Step 2: Convert to fraction form
    18,968.31/26,161.47 = 12,162.98/x
  3. Step 3: Cross multiply
    18,968.31x = 26,161.47 × 12,162.98
  4. Step 4: Simplify right side
    18,968.31x = 318,201,375.57
  5. Step 5: Solve for x
    x = 318,201,375.57/18,968.31
  6. Step 6: Final answer
    x = 16,775.42

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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.