Home / 13,118,905.20-19,682,044.20-6,387,538.80

Finding the Fourth Proportional to 13,118,905.20, 19,682,044.20 and 6,387,538.80

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Solution

The fourth proportional to 13,118,905.20, 19,682,044.20 and 6,387,538.80 is: 9,583,103.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118,905.20 : 19,682,044.20 = 6,387,538.80 : x
  2. Step 2: Convert to fraction form
    13,118,905.20/19,682,044.20 = 6,387,538.80/x
  3. Step 3: Cross multiply
    13,118,905.20x = 19,682,044.20 × 6,387,538.80
  4. Step 4: Simplify right side
    13,118,905.20x = 125,719,820,990,814.95
  5. Step 5: Solve for x
    x = 125,719,820,990,814.95/13,118,905.20
  6. Step 6: Final answer
    x = 9,583,103.09

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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.