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Finding the Fourth Proportional to 10,800.65, 16,164.39 and 6,643.29

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Solution

The fourth proportional to 10,800.65, 16,164.39 and 6,643.29 is: 9,942.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,800.65 : 16,164.39 = 6,643.29 : x
  2. Step 2: Convert to fraction form
    10,800.65/16,164.39 = 6,643.29/x
  3. Step 3: Cross multiply
    10,800.65x = 16,164.39 × 6,643.29
  4. Step 4: Simplify right side
    10,800.65x = 107,384,730.44
  5. Step 5: Solve for x
    x = 107,384,730.44/10,800.65
  6. Step 6: Final answer
    x = 9,942.44

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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.