Home / 15,899.09-21,940.82-9,934.21

Finding the Fourth Proportional to 15,899.09, 21,940.82 and 9,934.21

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Solution

The fourth proportional to 15,899.09, 21,940.82 and 9,934.21 is: 13,709.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,899.09 : 21,940.82 = 9,934.21 : x
  2. Step 2: Convert to fraction form
    15,899.09/21,940.82 = 9,934.21/x
  3. Step 3: Cross multiply
    15,899.09x = 21,940.82 × 9,934.21
  4. Step 4: Simplify right side
    15,899.09x = 217,964,608.93
  5. Step 5: Solve for x
    x = 217,964,608.93/15,899.09
  6. Step 6: Final answer
    x = 13,709.25

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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.