Home / 20,086-30,139.51-14,584.78

Finding the Fourth Proportional to 20,086, 30,139.51 and 14,584.78

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Solution

The fourth proportional to 20,086, 30,139.51 and 14,584.78 is: 21,884.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086 : 30,139.51 = 14,584.78 : x
  2. Step 2: Convert to fraction form
    20,086/30,139.51 = 14,584.78/x
  3. Step 3: Cross multiply
    20,086x = 30,139.51 × 14,584.78
  4. Step 4: Simplify right side
    20,086x = 439,578,122.66
  5. Step 5: Solve for x
    x = 439,578,122.66/20,086
  6. Step 6: Final answer
    x = 21,884.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.