Home / 12,939,320.80-19,429,976.40-7,270,616.80

Finding the Fourth Proportional to 12,939,320.80, 19,429,976.40 and 7,270,616.80

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Solution

The fourth proportional to 12,939,320.80, 19,429,976.40 and 7,270,616.80 is: 10,917,722.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939,320.80 : 19,429,976.40 = 7,270,616.80 : x
  2. Step 2: Convert to fraction form
    12,939,320.80/19,429,976.40 = 7,270,616.80/x
  3. Step 3: Cross multiply
    12,939,320.80x = 19,429,976.40 × 7,270,616.80
  4. Step 4: Simplify right side
    12,939,320.80x = 141,267,912,837,443.50
  5. Step 5: Solve for x
    x = 141,267,912,837,443.50/12,939,320.80
  6. Step 6: Final answer
    x = 10,917,722.42

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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.