Home / 12,798,625.80-19,208,436.30-12,378,721.80

Finding the Fourth Proportional to 12,798,625.80, 19,208,436.30 and 12,378,721.80

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Solution

The fourth proportional to 12,798,625.80, 19,208,436.30 and 12,378,721.80 is: 18,578,235.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798,625.80 : 19,208,436.30 = 12,378,721.80 : x
  2. Step 2: Convert to fraction form
    12,798,625.80/19,208,436.30 = 12,378,721.80/x
  3. Step 3: Cross multiply
    12,798,625.80x = 19,208,436.30 × 12,378,721.80
  4. Step 4: Simplify right side
    12,798,625.80x = 237,775,889,170,721.38
  5. Step 5: Solve for x
    x = 237,775,889,170,721.38/12,798,625.80
  6. Step 6: Final answer
    x = 18,578,235.89

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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.