Home / 21,071.97-29,080.49-11,640.33

Finding the Fourth Proportional to 21,071.97, 29,080.49 and 11,640.33

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Solution

The fourth proportional to 21,071.97, 29,080.49 and 11,640.33 is: 16,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.97 : 29,080.49 = 11,640.33 : x
  2. Step 2: Convert to fraction form
    21,071.97/29,080.49 = 11,640.33/x
  3. Step 3: Cross multiply
    21,071.97x = 29,080.49 × 11,640.33
  4. Step 4: Simplify right side
    21,071.97x = 338,506,441.96
  5. Step 5: Solve for x
    x = 338,506,441.96/21,071.97
  6. Step 6: Final answer
    x = 16,064.30

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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.