Home / 13,028,136.71-17,978,909.78-7,227,286.07

Finding the Fourth Proportional to 13,028,136.71, 17,978,909.78 and 7,227,286.07

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Solution

The fourth proportional to 13,028,136.71, 17,978,909.78 and 7,227,286.07 is: 9,973,699.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,028,136.71 : 17,978,909.78 = 7,227,286.07 : x
  2. Step 2: Convert to fraction form
    13,028,136.71/17,978,909.78 = 7,227,286.07/x
  3. Step 3: Cross multiply
    13,028,136.71x = 17,978,909.78 × 7,227,286.07
  4. Step 4: Simplify right side
    13,028,136.71x = 129,938,724,134,954.42
  5. Step 5: Solve for x
    x = 129,938,724,134,954.42/13,028,136.71
  6. Step 6: Final answer
    x = 9,973,699.78

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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.