Home / 20,658,469.80-30,961,132.65-12,562,851.90

Finding the Fourth Proportional to 20,658,469.80, 30,961,132.65 and 12,562,851.90

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Solution

The fourth proportional to 20,658,469.80, 30,961,132.65 and 12,562,851.90 is: 18,828,118.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658,469.80 : 30,961,132.65 = 12,562,851.90 : x
  2. Step 2: Convert to fraction form
    20,658,469.80/30,961,132.65 = 12,562,851.90/x
  3. Step 3: Cross multiply
    20,658,469.80x = 30,961,132.65 × 12,562,851.90
  4. Step 4: Simplify right side
    20,658,469.80x = 388,960,124,138,204.50
  5. Step 5: Solve for x
    x = 388,960,124,138,204.50/20,658,469.80
  6. Step 6: Final answer
    x = 18,828,118.83

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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.