Home / 21,716.64-29,968.38-12,285

Finding the Fourth Proportional to 21,716.64, 29,968.38 and 12,285

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Solution

The fourth proportional to 21,716.64, 29,968.38 and 12,285 is: 16,952.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,716.64 : 29,968.38 = 12,285 : x
  2. Step 2: Convert to fraction form
    21,716.64/29,968.38 = 12,285/x
  3. Step 3: Cross multiply
    21,716.64x = 29,968.38 × 12,285
  4. Step 4: Simplify right side
    21,716.64x = 368,161,548.30
  5. Step 5: Solve for x
    x = 368,161,548.30/21,716.64
  6. Step 6: Final answer
    x = 16,952.97

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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.