Home / 27,876.12-38,439.54-19,915.44

Finding the Fourth Proportional to 27,876.12, 38,439.54 and 19,915.44

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Solution

The fourth proportional to 27,876.12, 38,439.54 and 19,915.44 is: 27,462.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,876.12 : 38,439.54 = 19,915.44 : x
  2. Step 2: Convert to fraction form
    27,876.12/38,439.54 = 19,915.44/x
  3. Step 3: Cross multiply
    27,876.12x = 38,439.54 × 19,915.44
  4. Step 4: Simplify right side
    27,876.12x = 765,540,352.50
  5. Step 5: Solve for x
    x = 765,540,352.50/27,876.12
  6. Step 6: Final answer
    x = 27,462.23

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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.