Home / 31,743.21-43,802.88-18,131.19

Finding the Fourth Proportional to 31,743.21, 43,802.88 and 18,131.19

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Solution

The fourth proportional to 31,743.21, 43,802.88 and 18,131.19 is: 25,019.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,743.21 : 43,802.88 = 18,131.19 : x
  2. Step 2: Convert to fraction form
    31,743.21/43,802.88 = 18,131.19/x
  3. Step 3: Cross multiply
    31,743.21x = 43,802.88 × 18,131.19
  4. Step 4: Simplify right side
    31,743.21x = 794,198,339.83
  5. Step 5: Solve for x
    x = 794,198,339.83/31,743.21
  6. Step 6: Final answer
    x = 25,019.47

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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.