Home / 20,538,619-28,343,187.30-11,246,020.36

Finding the Fourth Proportional to 20,538,619, 28,343,187.30 and 11,246,020.36

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Solution

The fourth proportional to 20,538,619, 28,343,187.30 and 11,246,020.36 is: 15,519,449.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538,619 : 28,343,187.30 = 11,246,020.36 : x
  2. Step 2: Convert to fraction form
    20,538,619/28,343,187.30 = 11,246,020.36/x
  3. Step 3: Cross multiply
    20,538,619x = 28,343,187.30 × 11,246,020.36
  4. Step 4: Simplify right side
    20,538,619x = 318,748,061,443,093.44
  5. Step 5: Solve for x
    x = 318,748,061,443,093.44/20,538,619
  6. Step 6: Final answer
    x = 15,519,449.55

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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.