Home / 31,245.33-43,118.37-16,905.12

Finding the Fourth Proportional to 31,245.33, 43,118.37 and 16,905.12

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Solution

The fourth proportional to 31,245.33, 43,118.37 and 16,905.12 is: 23,328.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,245.33 : 43,118.37 = 16,905.12 : x
  2. Step 2: Convert to fraction form
    31,245.33/43,118.37 = 16,905.12/x
  3. Step 3: Cross multiply
    31,245.33x = 43,118.37 × 16,905.12
  4. Step 4: Simplify right side
    31,245.33x = 728,921,219.05
  5. Step 5: Solve for x
    x = 728,921,219.05/31,245.33
  6. Step 6: Final answer
    x = 23,328.97

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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.