Home / 31,561.10-43,556.45-18,137.71

Finding the Fourth Proportional to 31,561.10, 43,556.45 and 18,137.71

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Solution

The fourth proportional to 31,561.10, 43,556.45 and 18,137.71 is: 25,031.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,561.10 : 43,556.45 = 18,137.71 : x
  2. Step 2: Convert to fraction form
    31,561.10/43,556.45 = 18,137.71/x
  3. Step 3: Cross multiply
    31,561.10x = 43,556.45 × 18,137.71
  4. Step 4: Simplify right side
    31,561.10x = 790,014,258.73
  5. Step 5: Solve for x
    x = 790,014,258.73/31,561.10
  6. Step 6: Final answer
    x = 25,031.27

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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.