Home / 21,228,170.73-29,285,655.08-13,489,061.15

Finding the Fourth Proportional to 21,228,170.73, 29,285,655.08 and 13,489,061.15

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Solution

The fourth proportional to 21,228,170.73, 29,285,655.08 and 13,489,061.15 is: 18,609,045.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228,170.73 : 29,285,655.08 = 13,489,061.15 : x
  2. Step 2: Convert to fraction form
    21,228,170.73/29,285,655.08 = 13,489,061.15/x
  3. Step 3: Cross multiply
    21,228,170.73x = 29,285,655.08 × 13,489,061.15
  4. Step 4: Simplify right side
    21,228,170.73x = 395,035,991,978,054.56
  5. Step 5: Solve for x
    x = 395,035,991,978,054.56/21,228,170.73
  6. Step 6: Final answer
    x = 18,609,045.36

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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.