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Finding the Fourth Proportional to 12,902.67, 19,325.12 and 11,215.17

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Solution

The fourth proportional to 12,902.67, 19,325.12 and 11,215.17 is: 16,797.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,902.67 : 19,325.12 = 11,215.17 : x
  2. Step 2: Convert to fraction form
    12,902.67/19,325.12 = 11,215.17/x
  3. Step 3: Cross multiply
    12,902.67x = 19,325.12 × 11,215.17
  4. Step 4: Simplify right side
    12,902.67x = 216,734,449.99
  5. Step 5: Solve for x
    x = 216,734,449.99/12,902.67
  6. Step 6: Final answer
    x = 16,797.64

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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.