Home / 20,538,618-28,343,185.92-11,246,019.36

Finding the Fourth Proportional to 20,538,618, 28,343,185.92 and 11,246,019.36

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Solution

The fourth proportional to 20,538,618, 28,343,185.92 and 11,246,019.36 is: 15,519,448.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538,618 : 28,343,185.92 = 11,246,019.36 : x
  2. Step 2: Convert to fraction form
    20,538,618/28,343,185.92 = 11,246,019.36/x
  3. Step 3: Cross multiply
    20,538,618x = 28,343,185.92 × 11,246,019.36
  4. Step 4: Simplify right side
    20,538,618x = 318,748,017,580,399.44
  5. Step 5: Solve for x
    x = 318,748,017,580,399.44/20,538,618
  6. Step 6: Final answer
    x = 15,519,448.17

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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.