Home / 28,780,452.54-39,717,543.78-15,728,261.58

Finding the Fourth Proportional to 28,780,452.54, 39,717,543.78 and 15,728,261.58

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Solution

The fourth proportional to 28,780,452.54, 39,717,543.78 and 15,728,261.58 is: 21,705,284.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780,452.54 : 39,717,543.78 = 15,728,261.58 : x
  2. Step 2: Convert to fraction form
    28,780,452.54/39,717,543.78 = 15,728,261.58/x
  3. Step 3: Cross multiply
    28,780,452.54x = 39,717,543.78 × 15,728,261.58
  4. Step 4: Simplify right side
    28,780,452.54x = 624,687,917,886,942
  5. Step 5: Solve for x
    x = 624,687,917,886,942/28,780,452.54
  6. Step 6: Final answer
    x = 21,705,284.76

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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.