Home / 21,671.60-29,893.82-13,169.43

Finding the Fourth Proportional to 21,671.60, 29,893.82 and 13,169.43

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Solution

The fourth proportional to 21,671.60, 29,893.82 and 13,169.43 is: 18,165.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.60 : 29,893.82 = 13,169.43 : x
  2. Step 2: Convert to fraction form
    21,671.60/29,893.82 = 13,169.43/x
  3. Step 3: Cross multiply
    21,671.60x = 29,893.82 × 13,169.43
  4. Step 4: Simplify right side
    21,671.60x = 393,684,504.08
  5. Step 5: Solve for x
    x = 393,684,504.08/21,671.60
  6. Step 6: Final answer
    x = 18,165.92

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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.