Home / 13,479,958.90-20,219,938.35-8,378,125.30

Finding the Fourth Proportional to 13,479,958.90, 20,219,938.35 and 8,378,125.30

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Solution

The fourth proportional to 13,479,958.90, 20,219,938.35 and 8,378,125.30 is: 12,567,187.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479,958.90 : 20,219,938.35 = 8,378,125.30 : x
  2. Step 2: Convert to fraction form
    13,479,958.90/20,219,938.35 = 8,378,125.30/x
  3. Step 3: Cross multiply
    13,479,958.90x = 20,219,938.35 × 8,378,125.30
  4. Step 4: Simplify right side
    13,479,958.90x = 169,405,177,054,575.25
  5. Step 5: Solve for x
    x = 169,405,177,054,575.25/13,479,958.90
  6. Step 6: Final answer
    x = 12,567,187.95

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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.