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Finding the Fourth Proportional to 14,415.54, 19,893.18 and 8,127.92

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Solution

The fourth proportional to 14,415.54, 19,893.18 and 8,127.92 is: 11,216.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,415.54 : 19,893.18 = 8,127.92 : x
  2. Step 2: Convert to fraction form
    14,415.54/19,893.18 = 8,127.92/x
  3. Step 3: Cross multiply
    14,415.54x = 19,893.18 × 8,127.92
  4. Step 4: Simplify right side
    14,415.54x = 161,690,175.59
  5. Step 5: Solve for x
    x = 161,690,175.59/14,415.54
  6. Step 6: Final answer
    x = 11,216.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.