Home / 21,089.88-29,103.96-11,658.39

Finding the Fourth Proportional to 21,089.88, 29,103.96 and 11,658.39

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Solution

The fourth proportional to 21,089.88, 29,103.96 and 11,658.39 is: 16,088.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.88 : 29,103.96 = 11,658.39 : x
  2. Step 2: Convert to fraction form
    21,089.88/29,103.96 = 11,658.39/x
  3. Step 3: Cross multiply
    21,089.88x = 29,103.96 × 11,658.39
  4. Step 4: Simplify right side
    21,089.88x = 339,305,316.22
  5. Step 5: Solve for x
    x = 339,305,316.22/21,089.88
  6. Step 6: Final answer
    x = 16,088.54

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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.