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Finding the Fourth Proportional to 16,891.40, 25,347.97 and 9,105.64

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Solution

The fourth proportional to 16,891.40, 25,347.97 and 9,105.64 is: 13,664.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,891.40 : 25,347.97 = 9,105.64 : x
  2. Step 2: Convert to fraction form
    16,891.40/25,347.97 = 9,105.64/x
  3. Step 3: Cross multiply
    16,891.40x = 25,347.97 × 9,105.64
  4. Step 4: Simplify right side
    16,891.40x = 230,809,385.58
  5. Step 5: Solve for x
    x = 230,809,385.58/16,891.40
  6. Step 6: Final answer
    x = 13,664.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.