Home / 28,974,468.54-39,985,084.82-15,921,730.83

Finding the Fourth Proportional to 28,974,468.54, 39,985,084.82 and 15,921,730.83

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Solution

The fourth proportional to 28,974,468.54, 39,985,084.82 and 15,921,730.83 is: 21,972,163.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,974,468.54 : 39,985,084.82 = 15,921,730.83 : x
  2. Step 2: Convert to fraction form
    28,974,468.54/39,985,084.82 = 15,921,730.83/x
  3. Step 3: Cross multiply
    28,974,468.54x = 39,985,084.82 × 15,921,730.83
  4. Step 4: Simplify right side
    28,974,468.54x = 636,631,757,639,150.25
  5. Step 5: Solve for x
    x = 636,631,757,639,150.25/28,974,468.54
  6. Step 6: Final answer
    x = 21,972,163.42

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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.