Home / 28,021,198.08-42,031,796.80-12,887,857.92

Finding the Fourth Proportional to 28,021,198.08, 42,031,796.80 and 12,887,857.92

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Solution

The fourth proportional to 28,021,198.08, 42,031,796.80 and 12,887,857.92 is: 19,331,786.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021,198.08 : 42,031,796.80 = 12,887,857.92 : x
  2. Step 2: Convert to fraction form
    28,021,198.08/42,031,796.80 = 12,887,857.92/x
  3. Step 3: Cross multiply
    28,021,198.08x = 42,031,796.80 × 12,887,857.92
  4. Step 4: Simplify right side
    28,021,198.08x = 541,699,825,280,710.62
  5. Step 5: Solve for x
    x = 541,699,825,280,710.62/28,021,198.08
  6. Step 6: Final answer
    x = 19,331,786.73

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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.