Home / 31,645.03-43,663.98-18,216.85

Finding the Fourth Proportional to 31,645.03, 43,663.98 and 18,216.85

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Solution

The fourth proportional to 31,645.03, 43,663.98 and 18,216.85 is: 25,135.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,645.03 : 43,663.98 = 18,216.85 : x
  2. Step 2: Convert to fraction form
    31,645.03/43,663.98 = 18,216.85/x
  3. Step 3: Cross multiply
    31,645.03x = 43,663.98 × 18,216.85
  4. Step 4: Simplify right side
    31,645.03x = 795,420,174.06
  5. Step 5: Solve for x
    x = 795,420,174.06/31,645.03
  6. Step 6: Final answer
    x = 25,135.71

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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.