Home / 18,801.90-25,887.54-15,963.36

Finding the Fourth Proportional to 18,801.90, 25,887.54 and 15,963.36

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Solution

The fourth proportional to 18,801.90, 25,887.54 and 15,963.36 is: 21,979.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.90 : 25,887.54 = 15,963.36 : x
  2. Step 2: Convert to fraction form
    18,801.90/25,887.54 = 15,963.36/x
  3. Step 3: Cross multiply
    18,801.90x = 25,887.54 × 15,963.36
  4. Step 4: Simplify right side
    18,801.90x = 413,252,120.53
  5. Step 5: Solve for x
    x = 413,252,120.53/18,801.90
  6. Step 6: Final answer
    x = 21,979.27

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1.5x scale

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.