Home / 20,939,132.56-28,896,047.88-11,771,850.64

Finding the Fourth Proportional to 20,939,132.56, 28,896,047.88 and 11,771,850.64

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Solution

The fourth proportional to 20,939,132.56, 28,896,047.88 and 11,771,850.64 is: 16,245,179.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939,132.56 : 28,896,047.88 = 11,771,850.64 : x
  2. Step 2: Convert to fraction form
    20,939,132.56/28,896,047.88 = 11,771,850.64/x
  3. Step 3: Cross multiply
    20,939,132.56x = 28,896,047.88 × 11,771,850.64
  4. Step 4: Simplify right side
    20,939,132.56x = 340,159,959,729,648.62
  5. Step 5: Solve for x
    x = 340,159,959,729,648.62/20,939,132.56
  6. Step 6: Final answer
    x = 16,245,179.15

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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.