Home / 30,211.38-41,685.37-18,272.39

Finding the Fourth Proportional to 30,211.38, 41,685.37 and 18,272.39

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Solution

The fourth proportional to 30,211.38, 41,685.37 and 18,272.39 is: 25,212.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,211.38 : 41,685.37 = 18,272.39 : x
  2. Step 2: Convert to fraction form
    30,211.38/41,685.37 = 18,272.39/x
  3. Step 3: Cross multiply
    30,211.38x = 41,685.37 × 18,272.39
  4. Step 4: Simplify right side
    30,211.38x = 761,691,083.83
  5. Step 5: Solve for x
    x = 761,691,083.83/30,211.38
  6. Step 6: Final answer
    x = 25,212.06

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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.