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Finding the Fourth Proportional to 12,950.82, 19,445.68 and 7,410.42

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Solution

The fourth proportional to 12,950.82, 19,445.68 and 7,410.42 is: 11,126.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,950.82 : 19,445.68 = 7,410.42 : x
  2. Step 2: Convert to fraction form
    12,950.82/19,445.68 = 7,410.42/x
  3. Step 3: Cross multiply
    12,950.82x = 19,445.68 × 7,410.42
  4. Step 4: Simplify right side
    12,950.82x = 144,100,655.99
  5. Step 5: Solve for x
    x = 144,100,655.99/12,950.82
  6. Step 6: Final answer
    x = 11,126.76

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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.