Home / 31,370.13-43,291.67-18,620.19

Finding the Fourth Proportional to 31,370.13, 43,291.67 and 18,620.19

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Solution

The fourth proportional to 31,370.13, 43,291.67 and 18,620.19 is: 25,696.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,370.13 : 43,291.67 = 18,620.19 : x
  2. Step 2: Convert to fraction form
    31,370.13/43,291.67 = 18,620.19/x
  3. Step 3: Cross multiply
    31,370.13x = 43,291.67 × 18,620.19
  4. Step 4: Simplify right side
    31,370.13x = 806,099,027.72
  5. Step 5: Solve for x
    x = 806,099,027.72/31,370.13
  6. Step 6: Final answer
    x = 25,696.39

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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.