Home / 28,780,714.28-39,717,907.62-15,728,525.48

Finding the Fourth Proportional to 28,780,714.28, 39,717,907.62 and 15,728,525.48

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Solution

The fourth proportional to 28,780,714.28, 39,717,907.62 and 15,728,525.48 is: 21,705,650.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780,714.28 : 39,717,907.62 = 15,728,525.48 : x
  2. Step 2: Convert to fraction form
    28,780,714.28/39,717,907.62 = 15,728,525.48/x
  3. Step 3: Cross multiply
    28,780,714.28x = 39,717,907.62 × 15,728,525.48
  4. Step 4: Simplify right side
    28,780,714.28x = 624,704,122,013,456.12
  5. Step 5: Solve for x
    x = 624,704,122,013,456.12/28,780,714.28
  6. Step 6: Final answer
    x = 21,705,650.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.