Home / 21,043.58-29,078.62-20,018.52

Finding the Fourth Proportional to 21,043.58, 29,078.62 and 20,018.52

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Solution

The fourth proportional to 21,043.58, 29,078.62 and 20,018.52 is: 27,662.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.58 : 29,078.62 = 20,018.52 : x
  2. Step 2: Convert to fraction form
    21,043.58/29,078.62 = 20,018.52/x
  3. Step 3: Cross multiply
    21,043.58x = 29,078.62 × 20,018.52
  4. Step 4: Simplify right side
    21,043.58x = 582,110,936.04
  5. Step 5: Solve for x
    x = 582,110,936.04/21,043.58
  6. Step 6: Final answer
    x = 27,662.16

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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.