Home / 31,653.18-43,682.09-18,912.29

Finding the Fourth Proportional to 31,653.18, 43,682.09 and 18,912.29

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Solution

The fourth proportional to 31,653.18, 43,682.09 and 18,912.29 is: 26,099.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,653.18 : 43,682.09 = 18,912.29 : x
  2. Step 2: Convert to fraction form
    31,653.18/43,682.09 = 18,912.29/x
  3. Step 3: Cross multiply
    31,653.18x = 43,682.09 × 18,912.29
  4. Step 4: Simplify right side
    31,653.18x = 826,128,040.91
  5. Step 5: Solve for x
    x = 826,128,040.91/31,653.18
  6. Step 6: Final answer
    x = 26,099.37

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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.