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Finding the Fourth Proportional to 27,279, 37,645.43 and 16,666.38

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Solution

The fourth proportional to 27,279, 37,645.43 and 16,666.38 is: 22,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,279 : 37,645.43 = 16,666.38 : x
  2. Step 2: Convert to fraction form
    27,279/37,645.43 = 16,666.38/x
  3. Step 3: Cross multiply
    27,279x = 37,645.43 × 16,666.38
  4. Step 4: Simplify right side
    27,279x = 627,412,958.31
  5. Step 5: Solve for x
    x = 627,412,958.31/27,279
  6. Step 6: Final answer
    x = 22,999.85

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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.