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Finding the Fourth Proportional to 12,682.11, 19,026.41 and 7,421.54

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Solution

The fourth proportional to 12,682.11, 19,026.41 and 7,421.54 is: 11,134.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,682.11 : 19,026.41 = 7,421.54 : x
  2. Step 2: Convert to fraction form
    12,682.11/19,026.41 = 7,421.54/x
  3. Step 3: Cross multiply
    12,682.11x = 19,026.41 × 7,421.54
  4. Step 4: Simplify right side
    12,682.11x = 141,205,262.87
  5. Step 5: Solve for x
    x = 141,205,262.87/12,682.11
  6. Step 6: Final answer
    x = 11,134.21

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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.