Home / 21,018.14-28,992.39-16,534.79

Finding the Fourth Proportional to 21,018.14, 28,992.39 and 16,534.79

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Solution

The fourth proportional to 21,018.14, 28,992.39 and 16,534.79 is: 22,808.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.14 : 28,992.39 = 16,534.79 : x
  2. Step 2: Convert to fraction form
    21,018.14/28,992.39 = 16,534.79/x
  3. Step 3: Cross multiply
    21,018.14x = 28,992.39 × 16,534.79
  4. Step 4: Simplify right side
    21,018.14x = 479,383,080.25
  5. Step 5: Solve for x
    x = 479,383,080.25/21,018.14
  6. Step 6: Final answer
    x = 22,808.06

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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.