Home / 18,673.18-28,018-9,905.94

Finding the Fourth Proportional to 18,673.18, 28,018 and 9,905.94

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Solution

The fourth proportional to 18,673.18, 28,018 and 9,905.94 is: 14,863.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,673.18 : 28,018 = 9,905.94 : x
  2. Step 2: Convert to fraction form
    18,673.18/28,018 = 9,905.94/x
  3. Step 3: Cross multiply
    18,673.18x = 28,018 × 9,905.94
  4. Step 4: Simplify right side
    18,673.18x = 277,544,626.92
  5. Step 5: Solve for x
    x = 277,544,626.92/18,673.18
  6. Step 6: Final answer
    x = 14,863.28

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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.