Home / 18,469.16-27,688.32-8,603.36

Finding the Fourth Proportional to 18,469.16, 27,688.32 and 8,603.36

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Solution

The fourth proportional to 18,469.16, 27,688.32 and 8,603.36 is: 12,897.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.16 : 27,688.32 = 8,603.36 : x
  2. Step 2: Convert to fraction form
    18,469.16/27,688.32 = 8,603.36/x
  3. Step 3: Cross multiply
    18,469.16x = 27,688.32 × 8,603.36
  4. Step 4: Simplify right side
    18,469.16x = 238,212,584.76
  5. Step 5: Solve for x
    x = 238,212,584.76/18,469.16
  6. Step 6: Final answer
    x = 12,897.86

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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.