Home / 13,538.73-20,290.78-11,776.38

Finding the Fourth Proportional to 13,538.73, 20,290.78 and 11,776.38

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Solution

The fourth proportional to 13,538.73, 20,290.78 and 11,776.38 is: 17,649.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.73 : 20,290.78 = 11,776.38 : x
  2. Step 2: Convert to fraction form
    13,538.73/20,290.78 = 11,776.38/x
  3. Step 3: Cross multiply
    13,538.73x = 20,290.78 × 11,776.38
  4. Step 4: Simplify right side
    13,538.73x = 238,951,935.78
  5. Step 5: Solve for x
    x = 238,951,935.78/13,538.73
  6. Step 6: Final answer
    x = 17,649.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.