Home / 21,635.80-29,857.68-12,076.62

Finding the Fourth Proportional to 21,635.80, 29,857.68 and 12,076.62

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Solution

The fourth proportional to 21,635.80, 29,857.68 and 12,076.62 is: 16,665.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,635.80 : 29,857.68 = 12,076.62 : x
  2. Step 2: Convert to fraction form
    21,635.80/29,857.68 = 12,076.62/x
  3. Step 3: Cross multiply
    21,635.80x = 29,857.68 × 12,076.62
  4. Step 4: Simplify right side
    21,635.80x = 360,579,855.44
  5. Step 5: Solve for x
    x = 360,579,855.44/21,635.80
  6. Step 6: Final answer
    x = 16,665.89

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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.