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Finding the Fourth Proportional to 11,891.41, 16,410.03 and 6,513.89

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Solution

The fourth proportional to 11,891.41, 16,410.03 and 6,513.89 is: 8,989.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.41 : 16,410.03 = 6,513.89 : x
  2. Step 2: Convert to fraction form
    11,891.41/16,410.03 = 6,513.89/x
  3. Step 3: Cross multiply
    11,891.41x = 16,410.03 × 6,513.89
  4. Step 4: Simplify right side
    11,891.41x = 106,893,023.84
  5. Step 5: Solve for x
    x = 106,893,023.84/11,891.41
  6. Step 6: Final answer
    x = 8,989.10

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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.