Home / 20,185,285.80-30,241,843.20-12,283,654.80

Finding the Fourth Proportional to 20,185,285.80, 30,241,843.20 and 12,283,654.80

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Solution

The fourth proportional to 20,185,285.80, 30,241,843.20 and 12,283,654.80 is: 18,403,522.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185,285.80 : 30,241,843.20 = 12,283,654.80 : x
  2. Step 2: Convert to fraction form
    20,185,285.80/30,241,843.20 = 12,283,654.80/x
  3. Step 3: Cross multiply
    20,185,285.80x = 30,241,843.20 × 12,283,654.80
  4. Step 4: Simplify right side
    20,185,285.80x = 371,480,362,384,527.38
  5. Step 5: Solve for x
    x = 371,480,362,384,527.38/20,185,285.80
  6. Step 6: Final answer
    x = 18,403,522.55

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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.