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Finding the Fourth Proportional to 25,366.80, 38,050.20 and 11,515.80

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Solution

The fourth proportional to 25,366.80, 38,050.20 and 11,515.80 is: 17,273.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,366.80 : 38,050.20 = 11,515.80 : x
  2. Step 2: Convert to fraction form
    25,366.80/38,050.20 = 11,515.80/x
  3. Step 3: Cross multiply
    25,366.80x = 38,050.20 × 11,515.80
  4. Step 4: Simplify right side
    25,366.80x = 438,178,493.16
  5. Step 5: Solve for x
    x = 438,178,493.16/25,366.80
  6. Step 6: Final answer
    x = 17,273.70

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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.