Home / 20,939,131.56-28,896,046.50-11,771,849.64

Finding the Fourth Proportional to 20,939,131.56, 28,896,046.50 and 11,771,849.64

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Solution

The fourth proportional to 20,939,131.56, 28,896,046.50 and 11,771,849.64 is: 16,245,177.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939,131.56 : 28,896,046.50 = 11,771,849.64 : x
  2. Step 2: Convert to fraction form
    20,939,131.56/28,896,046.50 = 11,771,849.64/x
  3. Step 3: Cross multiply
    20,939,131.56x = 28,896,046.50 × 11,771,849.64
  4. Step 4: Simplify right side
    20,939,131.56x = 340,159,914,588,448.25
  5. Step 5: Solve for x
    x = 340,159,914,588,448.25/20,939,131.56
  6. Step 6: Final answer
    x = 16,245,177.77

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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.