Home / 12,170,193.30-18,219,860.55-11,815,899.30

Finding the Fourth Proportional to 12,170,193.30, 18,219,860.55 and 11,815,899.30

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Solution

The fourth proportional to 12,170,193.30, 18,219,860.55 and 11,815,899.30 is: 17,689,450.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170,193.30 : 18,219,860.55 = 11,815,899.30 : x
  2. Step 2: Convert to fraction form
    12,170,193.30/18,219,860.55 = 11,815,899.30/x
  3. Step 3: Cross multiply
    12,170,193.30x = 18,219,860.55 × 11,815,899.30
  4. Step 4: Simplify right side
    12,170,193.30x = 215,284,037,518,842.62
  5. Step 5: Solve for x
    x = 215,284,037,518,842.62/12,170,193.30
  6. Step 6: Final answer
    x = 17,689,450.96

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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.