Home / 28,763,868.72-39,693,902.94-15,711,135.96

Finding the Fourth Proportional to 28,763,868.72, 39,693,902.94 and 15,711,135.96

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Solution

The fourth proportional to 28,763,868.72, 39,693,902.94 and 15,711,135.96 is: 21,681,238.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,763,868.72 : 39,693,902.94 = 15,711,135.96 : x
  2. Step 2: Convert to fraction form
    28,763,868.72/39,693,902.94 = 15,711,135.96/x
  3. Step 3: Cross multiply
    28,763,868.72x = 39,693,902.94 × 15,711,135.96
  4. Step 4: Simplify right side
    28,763,868.72x = 623,636,305,873,383.75
  5. Step 5: Solve for x
    x = 623,636,305,873,383.75/28,763,868.72
  6. Step 6: Final answer
    x = 21,681,238.78

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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.