Home / 20,437,691.72-30,621,834.12-12,333,638.48

Finding the Fourth Proportional to 20,437,691.72, 30,621,834.12 and 12,333,638.48

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Solution

The fourth proportional to 20,437,691.72, 30,621,834.12 and 12,333,638.48 is: 18,479,515.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437,691.72 : 30,621,834.12 = 12,333,638.48 : x
  2. Step 2: Convert to fraction form
    20,437,691.72/30,621,834.12 = 12,333,638.48/x
  3. Step 3: Cross multiply
    20,437,691.72x = 30,621,834.12 × 12,333,638.48
  4. Step 4: Simplify right side
    20,437,691.72x = 377,678,631,630,608.94
  5. Step 5: Solve for x
    x = 377,678,631,630,608.94/20,437,691.72
  6. Step 6: Final answer
    x = 18,479,515.05

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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.