Home / 25,470.77-38,205.99-13,857.80

Finding the Fourth Proportional to 25,470.77, 38,205.99 and 13,857.80

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Solution

The fourth proportional to 25,470.77, 38,205.99 and 13,857.80 is: 20,786.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,470.77 : 38,205.99 = 13,857.80 : x
  2. Step 2: Convert to fraction form
    25,470.77/38,205.99 = 13,857.80/x
  3. Step 3: Cross multiply
    25,470.77x = 38,205.99 × 13,857.80
  4. Step 4: Simplify right side
    25,470.77x = 529,450,777.19
  5. Step 5: Solve for x
    x = 529,450,777.19/25,470.77
  6. Step 6: Final answer
    x = 20,786.61

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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.