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Finding the Fourth Proportional to 12,163.50, 16,785.63 and 6,574.50

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Solution

The fourth proportional to 12,163.50, 16,785.63 and 6,574.50 is: 9,072.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.50 : 16,785.63 = 6,574.50 : x
  2. Step 2: Convert to fraction form
    12,163.50/16,785.63 = 6,574.50/x
  3. Step 3: Cross multiply
    12,163.50x = 16,785.63 × 6,574.50
  4. Step 4: Simplify right side
    12,163.50x = 110,357,124.44
  5. Step 5: Solve for x
    x = 110,357,124.44/12,163.50
  6. Step 6: Final answer
    x = 9,072.81

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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.