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Finding the Fourth Proportional to 27,828.60, 38,405.03 and 16,504.80

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Solution

The fourth proportional to 27,828.60, 38,405.03 and 16,504.80 is: 22,777.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,828.60 : 38,405.03 = 16,504.80 : x
  2. Step 2: Convert to fraction form
    27,828.60/38,405.03 = 16,504.80/x
  3. Step 3: Cross multiply
    27,828.60x = 38,405.03 × 16,504.80
  4. Step 4: Simplify right side
    27,828.60x = 633,867,339.14
  5. Step 5: Solve for x
    x = 633,867,339.14/27,828.60
  6. Step 6: Final answer
    x = 22,777.55

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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.