Home / 18,219,005.20-27,328,507.80-7,432,721.20

Finding the Fourth Proportional to 18,219,005.20, 27,328,507.80 and 7,432,721.20

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Solution

The fourth proportional to 18,219,005.20, 27,328,507.80 and 7,432,721.20 is: 11,149,081.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219,005.20 : 27,328,507.80 = 7,432,721.20 : x
  2. Step 2: Convert to fraction form
    18,219,005.20/27,328,507.80 = 7,432,721.20/x
  3. Step 3: Cross multiply
    18,219,005.20x = 27,328,507.80 × 7,432,721.20
  4. Step 4: Simplify right side
    18,219,005.20x = 203,125,179,289,425.38
  5. Step 5: Solve for x
    x = 203,125,179,289,425.38/18,219,005.20
  6. Step 6: Final answer
    x = 11,149,081.80

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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.