Home / 21,418.02-31,973.73-18,616.26

Finding the Fourth Proportional to 21,418.02, 31,973.73 and 18,616.26

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Solution

The fourth proportional to 21,418.02, 31,973.73 and 18,616.26 is: 27,791.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.02 : 31,973.73 = 18,616.26 : x
  2. Step 2: Convert to fraction form
    21,418.02/31,973.73 = 18,616.26/x
  3. Step 3: Cross multiply
    21,418.02x = 31,973.73 × 18,616.26
  4. Step 4: Simplify right side
    21,418.02x = 595,231,270.85
  5. Step 5: Solve for x
    x = 595,231,270.85/21,418.02
  6. Step 6: Final answer
    x = 27,791.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.