Home / 13,479,966.40-20,219,949.60-8,378,132.80

Finding the Fourth Proportional to 13,479,966.40, 20,219,949.60 and 8,378,132.80

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Solution

The fourth proportional to 13,479,966.40, 20,219,949.60 and 8,378,132.80 is: 12,567,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479,966.40 : 20,219,949.60 = 8,378,132.80 : x
  2. Step 2: Convert to fraction form
    13,479,966.40/20,219,949.60 = 8,378,132.80/x
  3. Step 3: Cross multiply
    13,479,966.40x = 20,219,949.60 × 8,378,132.80
  4. Step 4: Simplify right side
    13,479,966.40x = 169,405,422,958,106.88
  5. Step 5: Solve for x
    x = 169,405,422,958,106.88/13,479,966.40
  6. Step 6: Final answer
    x = 12,567,199.20

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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.