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Finding the Fourth Proportional to 12,866.73, 19,305.64 and 4,974.80

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Solution

The fourth proportional to 12,866.73, 19,305.64 and 4,974.80 is: 7,464.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866.73 : 19,305.64 = 4,974.80 : x
  2. Step 2: Convert to fraction form
    12,866.73/19,305.64 = 4,974.80/x
  3. Step 3: Cross multiply
    12,866.73x = 19,305.64 × 4,974.80
  4. Step 4: Simplify right side
    12,866.73x = 96,041,689.68
  5. Step 5: Solve for x
    x = 96,041,689.68/12,866.73
  6. Step 6: Final answer
    x = 7,464.34

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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.