Home / 18,878,951.88-28,319,855.45-5,231,940.66

Finding the Fourth Proportional to 18,878,951.88, 28,319,855.45 and 5,231,940.66

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Solution

The fourth proportional to 18,878,951.88, 28,319,855.45 and 5,231,940.66 is: 7,848,306.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878,951.88 : 28,319,855.45 = 5,231,940.66 : x
  2. Step 2: Convert to fraction form
    18,878,951.88/28,319,855.45 = 5,231,940.66/x
  3. Step 3: Cross multiply
    18,878,951.88x = 28,319,855.45 × 5,231,940.66
  4. Step 4: Simplify right side
    18,878,951.88x = 148,167,803,188,017.91
  5. Step 5: Solve for x
    x = 148,167,803,188,017.91/18,878,951.88
  6. Step 6: Final answer
    x = 7,848,306.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.