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Finding the Fourth Proportional to 12,474.56, 18,620.56 and 10,998.40

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Solution

The fourth proportional to 12,474.56, 18,620.56 and 10,998.40 is: 16,417.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.56 : 18,620.56 = 10,998.40 : x
  2. Step 2: Convert to fraction form
    12,474.56/18,620.56 = 10,998.40/x
  3. Step 3: Cross multiply
    12,474.56x = 18,620.56 × 10,998.40
  4. Step 4: Simplify right side
    12,474.56x = 204,796,367.10
  5. Step 5: Solve for x
    x = 204,796,367.10/12,474.56
  6. Step 6: Final answer
    x = 16,417.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.