Home / 27,977.99-38,612.42-20,892.11

Finding the Fourth Proportional to 27,977.99, 38,612.42 and 20,892.11

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Solution

The fourth proportional to 27,977.99, 38,612.42 and 20,892.11 is: 28,833.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,977.99 : 38,612.42 = 20,892.11 : x
  2. Step 2: Convert to fraction form
    27,977.99/38,612.42 = 20,892.11/x
  3. Step 3: Cross multiply
    27,977.99x = 38,612.42 × 20,892.11
  4. Step 4: Simplify right side
    27,977.99x = 806,694,996.42
  5. Step 5: Solve for x
    x = 806,694,996.42/27,977.99
  6. Step 6: Final answer
    x = 28,833.20

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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.