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Finding the Fourth Proportional to 15,059.14, 20,784.52 and 8,689.84

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Solution

The fourth proportional to 15,059.14, 20,784.52 and 8,689.84 is: 11,993.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.14 : 20,784.52 = 8,689.84 : x
  2. Step 2: Convert to fraction form
    15,059.14/20,784.52 = 8,689.84/x
  3. Step 3: Cross multiply
    15,059.14x = 20,784.52 × 8,689.84
  4. Step 4: Simplify right side
    15,059.14x = 180,614,153.28
  5. Step 5: Solve for x
    x = 180,614,153.28/15,059.14
  6. Step 6: Final answer
    x = 11,993.66

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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.