Home / 31,845.91-43,940.93-18,412.26

Finding the Fourth Proportional to 31,845.91, 43,940.93 and 18,412.26

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Solution

The fourth proportional to 31,845.91, 43,940.93 and 18,412.26 is: 25,405.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,845.91 : 43,940.93 = 18,412.26 : x
  2. Step 2: Convert to fraction form
    31,845.91/43,940.93 = 18,412.26/x
  3. Step 3: Cross multiply
    31,845.91x = 43,940.93 × 18,412.26
  4. Step 4: Simplify right side
    31,845.91x = 809,051,921.70
  5. Step 5: Solve for x
    x = 809,051,921.70/31,845.91
  6. Step 6: Final answer
    x = 25,405.21

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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.