Home / 27,787.83-38,351.66-15,855.05

Finding the Fourth Proportional to 27,787.83, 38,351.66 and 15,855.05

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Solution

The fourth proportional to 27,787.83, 38,351.66 and 15,855.05 is: 21,882.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.83 : 38,351.66 = 15,855.05 : x
  2. Step 2: Convert to fraction form
    27,787.83/38,351.66 = 15,855.05/x
  3. Step 3: Cross multiply
    27,787.83x = 38,351.66 × 15,855.05
  4. Step 4: Simplify right side
    27,787.83x = 608,067,215.85
  5. Step 5: Solve for x
    x = 608,067,215.85/27,787.83
  6. Step 6: Final answer
    x = 21,882.50

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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.