Home / 12,205,379.80-18,329,064.90-8,636,195.80

Finding the Fourth Proportional to 12,205,379.80, 18,329,064.90 and 8,636,195.80

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Solution

The fourth proportional to 12,205,379.80, 18,329,064.90 and 8,636,195.80 is: 12,969,149.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,205,379.80 : 18,329,064.90 = 8,636,195.80 : x
  2. Step 2: Convert to fraction form
    12,205,379.80/18,329,064.90 = 8,636,195.80/x
  3. Step 3: Cross multiply
    12,205,379.80x = 18,329,064.90 × 8,636,195.80
  4. Step 4: Simplify right side
    12,205,379.80x = 158,293,393,307,307.41
  5. Step 5: Solve for x
    x = 158,293,393,307,307.41/12,205,379.80
  6. Step 6: Final answer
    x = 12,969,149.33

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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.