Home / 31,640.34-43,665.54-18,211.26

Finding the Fourth Proportional to 31,640.34, 43,665.54 and 18,211.26

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Solution

The fourth proportional to 31,640.34, 43,665.54 and 18,211.26 is: 25,132.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,640.34 : 43,665.54 = 18,211.26 : x
  2. Step 2: Convert to fraction form
    31,640.34/43,665.54 = 18,211.26/x
  3. Step 3: Cross multiply
    31,640.34x = 43,665.54 × 18,211.26
  4. Step 4: Simplify right side
    31,640.34x = 795,204,501.98
  5. Step 5: Solve for x
    x = 795,204,501.98/31,640.34
  6. Step 6: Final answer
    x = 25,132.62

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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.