Home / 27,689.58-38,211.75-15,114.42

Finding the Fourth Proportional to 27,689.58, 38,211.75 and 15,114.42

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Solution

The fourth proportional to 27,689.58, 38,211.75 and 15,114.42 is: 20,857.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,689.58 : 38,211.75 = 15,114.42 : x
  2. Step 2: Convert to fraction form
    27,689.58/38,211.75 = 15,114.42/x
  3. Step 3: Cross multiply
    27,689.58x = 38,211.75 × 15,114.42
  4. Step 4: Simplify right side
    27,689.58x = 577,548,438.44
  5. Step 5: Solve for x
    x = 577,548,438.44/27,689.58
  6. Step 6: Final answer
    x = 20,857.97

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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.