Home / 12,808.11-19,186.20-7,249.77

Finding the Fourth Proportional to 12,808.11, 19,186.20 and 7,249.77

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Solution

The fourth proportional to 12,808.11, 19,186.20 and 7,249.77 is: 10,859.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.11 : 19,186.20 = 7,249.77 : x
  2. Step 2: Convert to fraction form
    12,808.11/19,186.20 = 7,249.77/x
  3. Step 3: Cross multiply
    12,808.11x = 19,186.20 × 7,249.77
  4. Step 4: Simplify right side
    12,808.11x = 139,095,537.17
  5. Step 5: Solve for x
    x = 139,095,537.17/12,808.11
  6. Step 6: Final answer
    x = 10,859.96

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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.