Home / 31,650.63-43,682.40-18,220.56

Finding the Fourth Proportional to 31,650.63, 43,682.40 and 18,220.56

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Solution

The fourth proportional to 31,650.63, 43,682.40 and 18,220.56 is: 25,146.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,650.63 : 43,682.40 = 18,220.56 : x
  2. Step 2: Convert to fraction form
    31,650.63/43,682.40 = 18,220.56/x
  3. Step 3: Cross multiply
    31,650.63x = 43,682.40 × 18,220.56
  4. Step 4: Simplify right side
    31,650.63x = 795,917,790.14
  5. Step 5: Solve for x
    x = 795,917,790.14/31,650.63
  6. Step 6: Final answer
    x = 25,146.98

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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.