Home / 19,636.31-27,114.45-18,211.70

Finding the Fourth Proportional to 19,636.31, 27,114.45 and 18,211.70

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Solution

The fourth proportional to 19,636.31, 27,114.45 and 18,211.70 is: 25,147.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,636.31 : 27,114.45 = 18,211.70 : x
  2. Step 2: Convert to fraction form
    19,636.31/27,114.45 = 18,211.70/x
  3. Step 3: Cross multiply
    19,636.31x = 27,114.45 × 18,211.70
  4. Step 4: Simplify right side
    19,636.31x = 493,800,229.07
  5. Step 5: Solve for x
    x = 493,800,229.07/19,636.31
  6. Step 6: Final answer
    x = 25,147.30

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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.