Home / 21,204.36-29,252.43-13,647.98

Finding the Fourth Proportional to 21,204.36, 29,252.43 and 13,647.98

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Solution

The fourth proportional to 21,204.36, 29,252.43 and 13,647.98 is: 18,828.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.36 : 29,252.43 = 13,647.98 : x
  2. Step 2: Convert to fraction form
    21,204.36/29,252.43 = 13,647.98/x
  3. Step 3: Cross multiply
    21,204.36x = 29,252.43 × 13,647.98
  4. Step 4: Simplify right side
    21,204.36x = 399,236,652.72
  5. Step 5: Solve for x
    x = 399,236,652.72/21,204.36
  6. Step 6: Final answer
    x = 18,828.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.