Home / 12,790,721.80-19,196,580.30-12,370,817.80

Finding the Fourth Proportional to 12,790,721.80, 19,196,580.30 and 12,370,817.80

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Solution

The fourth proportional to 12,790,721.80, 19,196,580.30 and 12,370,817.80 is: 18,566,379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790,721.80 : 19,196,580.30 = 12,370,817.80 : x
  2. Step 2: Convert to fraction form
    12,790,721.80/19,196,580.30 = 12,370,817.80/x
  3. Step 3: Cross multiply
    12,790,721.80x = 19,196,580.30 × 12,370,817.80
  4. Step 4: Simplify right side
    12,790,721.80x = 237,477,397,274,369.38
  5. Step 5: Solve for x
    x = 237,477,397,274,369.38/12,790,721.80
  6. Step 6: Final answer
    x = 18,566,379.68

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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.