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Finding the Fourth Proportional to 12,807.10, 19,222.80 and 10,960.30

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Solution

The fourth proportional to 12,807.10, 19,222.80 and 10,960.30 is: 16,450.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.10 : 19,222.80 = 10,960.30 : x
  2. Step 2: Convert to fraction form
    12,807.10/19,222.80 = 10,960.30/x
  3. Step 3: Cross multiply
    12,807.10x = 19,222.80 × 10,960.30
  4. Step 4: Simplify right side
    12,807.10x = 210,687,654.84
  5. Step 5: Solve for x
    x = 210,687,654.84/12,807.10
  6. Step 6: Final answer
    x = 16,450.85

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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.