Home / 31,271.54-43,161.41-19,938.42

Finding the Fourth Proportional to 31,271.54, 43,161.41 and 19,938.42

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Solution

The fourth proportional to 31,271.54, 43,161.41 and 19,938.42 is: 27,519.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,271.54 : 43,161.41 = 19,938.42 : x
  2. Step 2: Convert to fraction form
    31,271.54/43,161.41 = 19,938.42/x
  3. Step 3: Cross multiply
    31,271.54x = 43,161.41 × 19,938.42
  4. Step 4: Simplify right side
    31,271.54x = 860,570,370.22
  5. Step 5: Solve for x
    x = 860,570,370.22/31,271.54
  6. Step 6: Final answer
    x = 27,519.29

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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.