Home / 20,208.39-27,899.15-13,505.37

Finding the Fourth Proportional to 20,208.39, 27,899.15 and 13,505.37

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Solution

The fourth proportional to 20,208.39, 27,899.15 and 13,505.37 is: 18,645.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.39 : 27,899.15 = 13,505.37 : x
  2. Step 2: Convert to fraction form
    20,208.39/27,899.15 = 13,505.37/x
  3. Step 3: Cross multiply
    20,208.39x = 27,899.15 × 13,505.37
  4. Step 4: Simplify right side
    20,208.39x = 376,788,343.44
  5. Step 5: Solve for x
    x = 376,788,343.44/20,208.39
  6. Step 6: Final answer
    x = 18,645.14

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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.