Home / 30,129.89-41,580.33-18,190.91

Finding the Fourth Proportional to 30,129.89, 41,580.33 and 18,190.91

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Solution

The fourth proportional to 30,129.89, 41,580.33 and 18,190.91 is: 25,104.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,129.89 : 41,580.33 = 18,190.91 : x
  2. Step 2: Convert to fraction form
    30,129.89/41,580.33 = 18,190.91/x
  3. Step 3: Cross multiply
    30,129.89x = 41,580.33 × 18,190.91
  4. Step 4: Simplify right side
    30,129.89x = 756,384,040.80
  5. Step 5: Solve for x
    x = 756,384,040.80/30,129.89
  6. Step 6: Final answer
    x = 25,104.11

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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.