Home / 20,186,320.80-30,243,395.70-12,284,689.80

Finding the Fourth Proportional to 20,186,320.80, 30,243,395.70 and 12,284,689.80

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Solution

The fourth proportional to 20,186,320.80, 30,243,395.70 and 12,284,689.80 is: 18,405,074.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186,320.80 : 30,243,395.70 = 12,284,689.80 : x
  2. Step 2: Convert to fraction form
    20,186,320.80/30,243,395.70 = 12,284,689.80/x
  3. Step 3: Cross multiply
    20,186,320.80x = 30,243,395.70 × 12,284,689.80
  4. Step 4: Simplify right side
    20,186,320.80x = 371,530,734,673,153.88
  5. Step 5: Solve for x
    x = 371,530,734,673,153.88/20,186,320.80
  6. Step 6: Final answer
    x = 18,405,074.33

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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.