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Finding the Fourth Proportional to 20,199,428.80, 30,303,079.80 and 8,684,873.80

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Solution

The fourth proportional to 20,199,428.80, 30,303,079.80 and 8,684,873.80 is: 13,029,003.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199,428.80 : 30,303,079.80 = 8,684,873.80 : x
  2. Step 2: Convert to fraction form
    20,199,428.80/30,303,079.80 = 8,684,873.80/x
  3. Step 3: Cross multiply
    20,199,428.80x = 30,303,079.80 × 8,684,873.80
  4. Step 4: Simplify right side
    20,199,428.80x = 263,178,423,814,329.28
  5. Step 5: Solve for x
    x = 263,178,423,814,329.28/20,199,428.80
  6. Step 6: Final answer
    x = 13,029,003.27

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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.