Home / 13,479,965.80-20,219,948.70-8,378,132.20

Finding the Fourth Proportional to 13,479,965.80, 20,219,948.70 and 8,378,132.20

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Solution

The fourth proportional to 13,479,965.80, 20,219,948.70 and 8,378,132.20 is: 12,567,198.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479,965.80 : 20,219,948.70 = 8,378,132.20 : x
  2. Step 2: Convert to fraction form
    13,479,965.80/20,219,948.70 = 8,378,132.20/x
  3. Step 3: Cross multiply
    13,479,965.80x = 20,219,948.70 × 8,378,132.20
  4. Step 4: Simplify right side
    13,479,965.80x = 169,405,403,285,818.12
  5. Step 5: Solve for x
    x = 169,405,403,285,818.12/13,479,965.80
  6. Step 6: Final answer
    x = 12,567,198.30

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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.