Home / 20,192,128.91-30,288,809.49-7,895,601.13

Finding the Fourth Proportional to 20,192,128.91, 30,288,809.49 and 7,895,601.13

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Solution

The fourth proportional to 20,192,128.91, 30,288,809.49 and 7,895,601.13 is: 11,843,642.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,192,128.91 : 30,288,809.49 = 7,895,601.13 : x
  2. Step 2: Convert to fraction form
    20,192,128.91/30,288,809.49 = 7,895,601.13/x
  3. Step 3: Cross multiply
    20,192,128.91x = 30,288,809.49 × 7,895,601.13
  4. Step 4: Simplify right side
    20,192,128.91x = 239,148,358,340,137.72
  5. Step 5: Solve for x
    x = 239,148,358,340,137.72/20,192,128.91
  6. Step 6: Final answer
    x = 11,843,642.61

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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.