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Finding the Fourth Proportional to 14,399.88, 21,600.16 and 3,869.91

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Solution

The fourth proportional to 14,399.88, 21,600.16 and 3,869.91 is: 5,804.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,399.88 : 21,600.16 = 3,869.91 : x
  2. Step 2: Convert to fraction form
    14,399.88/21,600.16 = 3,869.91/x
  3. Step 3: Cross multiply
    14,399.88x = 21,600.16 × 3,869.91
  4. Step 4: Simplify right side
    14,399.88x = 83,590,665.51
  5. Step 5: Solve for x
    x = 83,590,665.51/14,399.88
  6. Step 6: Final answer
    x = 5,804.96

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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.