Home / 30,189.78-41,661.27-16,760.25

Finding the Fourth Proportional to 30,189.78, 41,661.27 and 16,760.25

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Solution

The fourth proportional to 30,189.78, 41,661.27 and 16,760.25 is: 23,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,189.78 : 41,661.27 = 16,760.25 : x
  2. Step 2: Convert to fraction form
    30,189.78/41,661.27 = 16,760.25/x
  3. Step 3: Cross multiply
    30,189.78x = 41,661.27 × 16,760.25
  4. Step 4: Simplify right side
    30,189.78x = 698,253,300.52
  5. Step 5: Solve for x
    x = 698,253,300.52/30,189.78
  6. Step 6: Final answer
    x = 23,128.80

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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.