Home / 31,379.44-43,302.28-18,811.12

Finding the Fourth Proportional to 31,379.44, 43,302.28 and 18,811.12

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Solution

The fourth proportional to 31,379.44, 43,302.28 and 18,811.12 is: 25,958.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,379.44 : 43,302.28 = 18,811.12 : x
  2. Step 2: Convert to fraction form
    31,379.44/43,302.28 = 18,811.12/x
  3. Step 3: Cross multiply
    31,379.44x = 43,302.28 × 18,811.12
  4. Step 4: Simplify right side
    31,379.44x = 814,564,385.35
  5. Step 5: Solve for x
    x = 814,564,385.35/31,379.44
  6. Step 6: Final answer
    x = 25,958.54

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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.