Home / 28,923,663.98-39,838,034.31-21,557,891.72

Finding the Fourth Proportional to 28,923,663.98, 39,838,034.31 and 21,557,891.72

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Solution

The fourth proportional to 28,923,663.98, 39,838,034.31 and 21,557,891.72 is: 29,692,781.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,923,663.98 : 39,838,034.31 = 21,557,891.72 : x
  2. Step 2: Convert to fraction form
    28,923,663.98/39,838,034.31 = 21,557,891.72/x
  3. Step 3: Cross multiply
    28,923,663.98x = 39,838,034.31 × 21,557,891.72
  4. Step 4: Simplify right side
    28,923,663.98x = 858,824,029,992,624.88
  5. Step 5: Solve for x
    x = 858,824,029,992,624.88/28,923,663.98
  6. Step 6: Final answer
    x = 29,692,781.34

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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.