Home / 21,228,171.73-29,285,656.45-13,489,062.15

Finding the Fourth Proportional to 21,228,171.73, 29,285,656.45 and 13,489,062.15

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Solution

The fourth proportional to 21,228,171.73, 29,285,656.45 and 13,489,062.15 is: 18,609,046.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228,171.73 : 29,285,656.45 = 13,489,062.15 : x
  2. Step 2: Convert to fraction form
    21,228,171.73/29,285,656.45 = 13,489,062.15/x
  3. Step 3: Cross multiply
    21,228,171.73x = 29,285,656.45 × 13,489,062.15
  4. Step 4: Simplify right side
    21,228,171.73x = 395,036,039,957,598.38
  5. Step 5: Solve for x
    x = 395,036,039,957,598.38/21,228,171.73
  6. Step 6: Final answer
    x = 18,609,046.74

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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.