Home / 31,638.22-43,659.36-18,209.91

Finding the Fourth Proportional to 31,638.22, 43,659.36 and 18,209.91

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Solution

The fourth proportional to 31,638.22, 43,659.36 and 18,209.91 is: 25,128.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,638.22 : 43,659.36 = 18,209.91 : x
  2. Step 2: Convert to fraction form
    31,638.22/43,659.36 = 18,209.91/x
  3. Step 3: Cross multiply
    31,638.22x = 43,659.36 × 18,209.91
  4. Step 4: Simplify right side
    31,638.22x = 795,032,975.40
  5. Step 5: Solve for x
    x = 795,032,975.40/31,638.22
  6. Step 6: Final answer
    x = 25,128.88

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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.