Home / 25,698.60-38,540.70-8,173.80

Finding the Fourth Proportional to 25,698.60, 38,540.70 and 8,173.80

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Solution

The fourth proportional to 25,698.60, 38,540.70 and 8,173.80 is: 12,258.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,698.60 : 38,540.70 = 8,173.80 : x
  2. Step 2: Convert to fraction form
    25,698.60/38,540.70 = 8,173.80/x
  3. Step 3: Cross multiply
    25,698.60x = 38,540.70 × 8,173.80
  4. Step 4: Simplify right side
    25,698.60x = 315,023,973.66
  5. Step 5: Solve for x
    x = 315,023,973.66/25,698.60
  6. Step 6: Final answer
    x = 12,258.41

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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.