Home / 20,908.09-28,853.12-11,476.45

Finding the Fourth Proportional to 20,908.09, 28,853.12 and 11,476.45

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Solution

The fourth proportional to 20,908.09, 28,853.12 and 11,476.45 is: 15,837.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.09 : 28,853.12 = 11,476.45 : x
  2. Step 2: Convert to fraction form
    20,908.09/28,853.12 = 11,476.45/x
  3. Step 3: Cross multiply
    20,908.09x = 28,853.12 × 11,476.45
  4. Step 4: Simplify right side
    20,908.09x = 331,131,187.38
  5. Step 5: Solve for x
    x = 331,131,187.38/20,908.09
  6. Step 6: Final answer
    x = 15,837.47

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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.