Home / 21,149.50-29,185.14-11,717.32

Finding the Fourth Proportional to 21,149.50, 29,185.14 and 11,717.32

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Solution

The fourth proportional to 21,149.50, 29,185.14 and 11,717.32 is: 16,169.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.50 : 29,185.14 = 11,717.32 : x
  2. Step 2: Convert to fraction form
    21,149.50/29,185.14 = 11,717.32/x
  3. Step 3: Cross multiply
    21,149.50x = 29,185.14 × 11,717.32
  4. Step 4: Simplify right side
    21,149.50x = 341,971,624.62
  5. Step 5: Solve for x
    x = 341,971,624.62/21,149.50
  6. Step 6: Final answer
    x = 16,169.25

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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.