Home / 21,577.02-29,772.81-13,623.54

Finding the Fourth Proportional to 21,577.02, 29,772.81 and 13,623.54

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Solution

The fourth proportional to 21,577.02, 29,772.81 and 13,623.54 is: 18,798.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,577.02 : 29,772.81 = 13,623.54 : x
  2. Step 2: Convert to fraction form
    21,577.02/29,772.81 = 13,623.54/x
  3. Step 3: Cross multiply
    21,577.02x = 29,772.81 × 13,623.54
  4. Step 4: Simplify right side
    21,577.02x = 405,611,067.95
  5. Step 5: Solve for x
    x = 405,611,067.95/21,577.02
  6. Step 6: Final answer
    x = 18,798.29

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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.