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Finding the Fourth Proportional to 25,984.60, 38,980.97 and 8,450.32

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Solution

The fourth proportional to 25,984.60, 38,980.97 and 8,450.32 is: 12,676.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,984.60 : 38,980.97 = 8,450.32 : x
  2. Step 2: Convert to fraction form
    25,984.60/38,980.97 = 8,450.32/x
  3. Step 3: Cross multiply
    25,984.60x = 38,980.97 × 8,450.32
  4. Step 4: Simplify right side
    25,984.60x = 329,401,670.41
  5. Step 5: Solve for x
    x = 329,401,670.41/25,984.60
  6. Step 6: Final answer
    x = 12,676.80

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1.5x scale

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.