Home / 19,893.12-29,839.68-11,123.24

Finding the Fourth Proportional to 19,893.12, 29,839.68 and 11,123.24

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Solution

The fourth proportional to 19,893.12, 29,839.68 and 11,123.24 is: 16,684.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,893.12 : 29,839.68 = 11,123.24 : x
  2. Step 2: Convert to fraction form
    19,893.12/29,839.68 = 11,123.24/x
  3. Step 3: Cross multiply
    19,893.12x = 29,839.68 × 11,123.24
  4. Step 4: Simplify right side
    19,893.12x = 331,913,922.16
  5. Step 5: Solve for x
    x = 331,913,922.16/19,893.12
  6. Step 6: Final answer
    x = 16,684.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.