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Finding the Fourth Proportional to 15,797.61, 21,799.89 and 9,078.48

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Solution

The fourth proportional to 15,797.61, 21,799.89 and 9,078.48 is: 12,527.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,797.61 : 21,799.89 = 9,078.48 : x
  2. Step 2: Convert to fraction form
    15,797.61/21,799.89 = 9,078.48/x
  3. Step 3: Cross multiply
    15,797.61x = 21,799.89 × 9,078.48
  4. Step 4: Simplify right side
    15,797.61x = 197,909,865.37
  5. Step 5: Solve for x
    x = 197,909,865.37/15,797.61
  6. Step 6: Final answer
    x = 12,527.84

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.