Home / 20,511,968.73-30,768,005.21-8,381,432.21

Finding the Fourth Proportional to 20,511,968.73, 30,768,005.21 and 8,381,432.21

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Solution

The fourth proportional to 20,511,968.73, 30,768,005.21 and 8,381,432.21 is: 12,572,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511,968.73 : 30,768,005.21 = 8,381,432.21 : x
  2. Step 2: Convert to fraction form
    20,511,968.73/30,768,005.21 = 8,381,432.21/x
  3. Step 3: Cross multiply
    20,511,968.73x = 30,768,005.21 × 8,381,432.21
  4. Step 4: Simplify right side
    20,511,968.73x = 257,879,949,771,655.34
  5. Step 5: Solve for x
    x = 257,879,949,771,655.34/20,511,968.73
  6. Step 6: Final answer
    x = 12,572,169.60

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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.