Home / 20,687,890.88-28,548,234.24-11,395,260.91

Finding the Fourth Proportional to 20,687,890.88, 28,548,234.24 and 11,395,260.91

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Solution

The fourth proportional to 20,687,890.88, 28,548,234.24 and 11,395,260.91 is: 15,724,878.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,890.88 : 28,548,234.24 = 11,395,260.91 : x
  2. Step 2: Convert to fraction form
    20,687,890.88/28,548,234.24 = 11,395,260.91/x
  3. Step 3: Cross multiply
    20,687,890.88x = 28,548,234.24 × 11,395,260.91
  4. Step 4: Simplify right side
    20,687,890.88x = 325,314,577,684,595.56
  5. Step 5: Solve for x
    x = 325,314,577,684,595.56/20,687,890.88
  6. Step 6: Final answer
    x = 15,724,878.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.