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Finding the Fourth Proportional to 14,605.97, 20,155.37 and 8,638.16

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Solution

The fourth proportional to 14,605.97, 20,155.37 and 8,638.16 is: 11,920.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,605.97 : 20,155.37 = 8,638.16 : x
  2. Step 2: Convert to fraction form
    14,605.97/20,155.37 = 8,638.16/x
  3. Step 3: Cross multiply
    14,605.97x = 20,155.37 × 8,638.16
  4. Step 4: Simplify right side
    14,605.97x = 174,105,166.95
  5. Step 5: Solve for x
    x = 174,105,166.95/14,605.97
  6. Step 6: Final answer
    x = 11,920.14

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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.