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Finding the Fourth Proportional to 14,791.50, 20,411.46 and 8,417.90

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Solution

The fourth proportional to 14,791.50, 20,411.46 and 8,417.90 is: 11,616.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,791.50 : 20,411.46 = 8,417.90 : x
  2. Step 2: Convert to fraction form
    14,791.50/20,411.46 = 8,417.90/x
  3. Step 3: Cross multiply
    14,791.50x = 20,411.46 × 8,417.90
  4. Step 4: Simplify right side
    14,791.50x = 171,821,629.13
  5. Step 5: Solve for x
    x = 171,821,629.13/14,791.50
  6. Step 6: Final answer
    x = 11,616.24

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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.