Home / 21,701.82-29,949.08-12,141.39

Finding the Fourth Proportional to 21,701.82, 29,949.08 and 12,141.39

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Solution

The fourth proportional to 21,701.82, 29,949.08 and 12,141.39 is: 16,755.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,701.82 : 29,949.08 = 12,141.39 : x
  2. Step 2: Convert to fraction form
    21,701.82/29,949.08 = 12,141.39/x
  3. Step 3: Cross multiply
    21,701.82x = 29,949.08 × 12,141.39
  4. Step 4: Simplify right side
    21,701.82x = 363,623,399.71
  5. Step 5: Solve for x
    x = 363,623,399.71/21,701.82
  6. Step 6: Final answer
    x = 16,755.43

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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.