Home / 21,149.32-29,186.04-11,717.68

Finding the Fourth Proportional to 21,149.32, 29,186.04 and 11,717.68

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Solution

The fourth proportional to 21,149.32, 29,186.04 and 11,717.68 is: 16,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.32 : 29,186.04 = 11,717.68 : x
  2. Step 2: Convert to fraction form
    21,149.32/29,186.04 = 11,717.68/x
  3. Step 3: Cross multiply
    21,149.32x = 29,186.04 × 11,717.68
  4. Step 4: Simplify right side
    21,149.32x = 341,992,677.19
  5. Step 5: Solve for x
    x = 341,992,677.19/21,149.32
  6. Step 6: Final answer
    x = 16,170.39

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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.