Home / 31,243.44-43,118.88-18,667.92

Finding the Fourth Proportional to 31,243.44, 43,118.88 and 18,667.92

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Solution

The fourth proportional to 31,243.44, 43,118.88 and 18,667.92 is: 25,763.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,243.44 : 43,118.88 = 18,667.92 : x
  2. Step 2: Convert to fraction form
    31,243.44/43,118.88 = 18,667.92/x
  3. Step 3: Cross multiply
    31,243.44x = 43,118.88 × 18,667.92
  4. Step 4: Simplify right side
    31,243.44x = 804,939,802.33
  5. Step 5: Solve for x
    x = 804,939,802.33/31,243.44
  6. Step 6: Final answer
    x = 25,763.48

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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.