Home / 21,089.38-29,103.27-11,657.89

Finding the Fourth Proportional to 21,089.38, 29,103.27 and 11,657.89

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Solution

The fourth proportional to 21,089.38, 29,103.27 and 11,657.89 is: 16,087.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.38 : 29,103.27 = 11,657.89 : x
  2. Step 2: Convert to fraction form
    21,089.38/29,103.27 = 11,657.89/x
  3. Step 3: Cross multiply
    21,089.38x = 29,103.27 × 11,657.89
  4. Step 4: Simplify right side
    21,089.38x = 339,282,720.30
  5. Step 5: Solve for x
    x = 339,282,720.30/21,089.38
  6. Step 6: Final answer
    x = 16,087.85

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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.