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Finding the Fourth Proportional to 15,218.67, 21,002.88 and 8,760.27

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Solution

The fourth proportional to 15,218.67, 21,002.88 and 8,760.27 is: 12,089.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.67 : 21,002.88 = 8,760.27 : x
  2. Step 2: Convert to fraction form
    15,218.67/21,002.88 = 8,760.27/x
  3. Step 3: Cross multiply
    15,218.67x = 21,002.88 × 8,760.27
  4. Step 4: Simplify right side
    15,218.67x = 183,990,899.58
  5. Step 5: Solve for x
    x = 183,990,899.58/15,218.67
  6. Step 6: Final answer
    x = 12,089.81

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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.