Home / 21,039.77-29,033.91-12,080.97

Finding the Fourth Proportional to 21,039.77, 29,033.91 and 12,080.97

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Solution

The fourth proportional to 21,039.77, 29,033.91 and 12,080.97 is: 16,671.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039.77 : 29,033.91 = 12,080.97 : x
  2. Step 2: Convert to fraction form
    21,039.77/29,033.91 = 12,080.97/x
  3. Step 3: Cross multiply
    21,039.77x = 29,033.91 × 12,080.97
  4. Step 4: Simplify right side
    21,039.77x = 350,757,795.69
  5. Step 5: Solve for x
    x = 350,757,795.69/21,039.77
  6. Step 6: Final answer
    x = 16,671.18

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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.