Home / 12,918,129.80-19,379,819.10-4,399,327.40

Finding the Fourth Proportional to 12,918,129.80, 19,379,819.10 and 4,399,327.40

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Solution

The fourth proportional to 12,918,129.80, 19,379,819.10 and 4,399,327.40 is: 6,599,884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918,129.80 : 19,379,819.10 = 4,399,327.40 : x
  2. Step 2: Convert to fraction form
    12,918,129.80/19,379,819.10 = 4,399,327.40/x
  3. Step 3: Cross multiply
    12,918,129.80x = 19,379,819.10 × 4,399,327.40
  4. Step 4: Simplify right side
    12,918,129.80x = 85,258,169,173,673.36
  5. Step 5: Solve for x
    x = 85,258,169,173,673.36/12,918,129.80
  6. Step 6: Final answer
    x = 6,599,884.85

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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.