Home / 31,689.10-43,731.99-18,259.30

Finding the Fourth Proportional to 31,689.10, 43,731.99 and 18,259.30

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Solution

The fourth proportional to 31,689.10, 43,731.99 and 18,259.30 is: 25,198.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689.10 : 43,731.99 = 18,259.30 : x
  2. Step 2: Convert to fraction form
    31,689.10/43,731.99 = 18,259.30/x
  3. Step 3: Cross multiply
    31,689.10x = 43,731.99 × 18,259.30
  4. Step 4: Simplify right side
    31,689.10x = 798,515,525.01
  5. Step 5: Solve for x
    x = 798,515,525.01/31,689.10
  6. Step 6: Final answer
    x = 25,198.43

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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.