Home / 21,346.70-31,954.43-18,197.42

Finding the Fourth Proportional to 21,346.70, 31,954.43 and 18,197.42

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Solution

The fourth proportional to 21,346.70, 31,954.43 and 18,197.42 is: 27,240.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,346.70 : 31,954.43 = 18,197.42 : x
  2. Step 2: Convert to fraction form
    21,346.70/31,954.43 = 18,197.42/x
  3. Step 3: Cross multiply
    21,346.70x = 31,954.43 × 18,197.42
  4. Step 4: Simplify right side
    21,346.70x = 581,488,069.29
  5. Step 5: Solve for x
    x = 581,488,069.29/21,346.70
  6. Step 6: Final answer
    x = 27,240.19

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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.