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Finding the Fourth Proportional to 14,689.73, 20,272.61 and 8,403.17

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Solution

The fourth proportional to 14,689.73, 20,272.61 and 8,403.17 is: 11,596.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,689.73 : 20,272.61 = 8,403.17 : x
  2. Step 2: Convert to fraction form
    14,689.73/20,272.61 = 8,403.17/x
  3. Step 3: Cross multiply
    14,689.73x = 20,272.61 × 8,403.17
  4. Step 4: Simplify right side
    14,689.73x = 170,354,146.16
  5. Step 5: Solve for x
    x = 170,354,146.16/14,689.73
  6. Step 6: Final answer
    x = 11,596.82

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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.