Home / 20,388,343.14-28,136,112.21-11,221,197.30

Finding the Fourth Proportional to 20,388,343.14, 28,136,112.21 and 11,221,197.30

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Solution

The fourth proportional to 20,388,343.14, 28,136,112.21 and 11,221,197.30 is: 15,485,361.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388,343.14 : 28,136,112.21 = 11,221,197.30 : x
  2. Step 2: Convert to fraction form
    20,388,343.14/28,136,112.21 = 11,221,197.30/x
  3. Step 3: Cross multiply
    20,388,343.14x = 28,136,112.21 × 11,221,197.30
  4. Step 4: Simplify right side
    20,388,343.14x = 315,720,866,363,349.06
  5. Step 5: Solve for x
    x = 315,720,866,363,349.06/20,388,343.14
  6. Step 6: Final answer
    x = 15,485,361.62

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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.