Home / 31,215.86-43,074.36-18,469.43

Finding the Fourth Proportional to 31,215.86, 43,074.36 and 18,469.43

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Solution

The fourth proportional to 31,215.86, 43,074.36 and 18,469.43 is: 25,485.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,215.86 : 43,074.36 = 18,469.43 : x
  2. Step 2: Convert to fraction form
    31,215.86/43,074.36 = 18,469.43/x
  3. Step 3: Cross multiply
    31,215.86x = 43,074.36 × 18,469.43
  4. Step 4: Simplify right side
    31,215.86x = 795,558,876.81
  5. Step 5: Solve for x
    x = 795,558,876.81/31,215.86
  6. Step 6: Final answer
    x = 25,485.73

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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.