Home / 31,245.18-43,111.68-18,502.37

Finding the Fourth Proportional to 31,245.18, 43,111.68 and 18,502.37

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Solution

The fourth proportional to 31,245.18, 43,111.68 and 18,502.37 is: 25,529.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,245.18 : 43,111.68 = 18,502.37 : x
  2. Step 2: Convert to fraction form
    31,245.18/43,111.68 = 18,502.37/x
  3. Step 3: Cross multiply
    31,245.18x = 43,111.68 × 18,502.37
  4. Step 4: Simplify right side
    31,245.18x = 797,668,039.12
  5. Step 5: Solve for x
    x = 797,668,039.12/31,245.18
  6. Step 6: Final answer
    x = 25,529.31

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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.