Home / 12,790,990.14-17,653,366.44-8,143,290.42

Finding the Fourth Proportional to 12,790,990.14, 17,653,366.44 and 8,143,290.42

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Solution

The fourth proportional to 12,790,990.14, 17,653,366.44 and 8,143,290.42 is: 11,238,886.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790,990.14 : 17,653,366.44 = 8,143,290.42 : x
  2. Step 2: Convert to fraction form
    12,790,990.14/17,653,366.44 = 8,143,290.42/x
  3. Step 3: Cross multiply
    12,790,990.14x = 17,653,366.44 × 8,143,290.42
  4. Step 4: Simplify right side
    12,790,990.14x = 143,756,489,811,601.50
  5. Step 5: Solve for x
    x = 143,756,489,811,601.50/12,790,990.14
  6. Step 6: Final answer
    x = 11,238,886.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.