Home / 27,878.12-38,442.30-19,917.44

Finding the Fourth Proportional to 27,878.12, 38,442.30 and 19,917.44

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Solution

The fourth proportional to 27,878.12, 38,442.30 and 19,917.44 is: 27,464.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.12 : 38,442.30 = 19,917.44 : x
  2. Step 2: Convert to fraction form
    27,878.12/38,442.30 = 19,917.44/x
  3. Step 3: Cross multiply
    27,878.12x = 38,442.30 × 19,917.44
  4. Step 4: Simplify right side
    27,878.12x = 765,672,203.71
  5. Step 5: Solve for x
    x = 765,672,203.71/27,878.12
  6. Step 6: Final answer
    x = 27,464.99

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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.