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Finding the Fourth Proportional to 25,948.40, 38,922.60 and 20,764.40

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Solution

The fourth proportional to 25,948.40, 38,922.60 and 20,764.40 is: 31,146.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,948.40 : 38,922.60 = 20,764.40 : x
  2. Step 2: Convert to fraction form
    25,948.40/38,922.60 = 20,764.40/x
  3. Step 3: Cross multiply
    25,948.40x = 38,922.60 × 20,764.40
  4. Step 4: Simplify right side
    25,948.40x = 808,204,435.44
  5. Step 5: Solve for x
    x = 808,204,435.44/25,948.40
  6. Step 6: Final answer
    x = 31,146.60

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