Home / 27,809.82-38,380.30-15,874.95

Finding the Fourth Proportional to 27,809.82, 38,380.30 and 15,874.95

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Solution

The fourth proportional to 27,809.82, 38,380.30 and 15,874.95 is: 21,908.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,809.82 : 38,380.30 = 15,874.95 : x
  2. Step 2: Convert to fraction form
    27,809.82/38,380.30 = 15,874.95/x
  3. Step 3: Cross multiply
    27,809.82x = 38,380.30 × 15,874.95
  4. Step 4: Simplify right side
    27,809.82x = 609,285,072.21
  5. Step 5: Solve for x
    x = 609,285,072.21/27,809.82
  6. Step 6: Final answer
    x = 21,908.99

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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.