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Finding the Fourth Proportional to 16,639.88, 22,964.48 and 9,189.32

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Solution

The fourth proportional to 16,639.88, 22,964.48 and 9,189.32 is: 12,682.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,639.88 : 22,964.48 = 9,189.32 : x
  2. Step 2: Convert to fraction form
    16,639.88/22,964.48 = 9,189.32/x
  3. Step 3: Cross multiply
    16,639.88x = 22,964.48 × 9,189.32
  4. Step 4: Simplify right side
    16,639.88x = 211,027,794.58
  5. Step 5: Solve for x
    x = 211,027,794.58/16,639.88
  6. Step 6: Final answer
    x = 12,682.05

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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.