Home / 27,609.21-38,103.90-15,671.43

Finding the Fourth Proportional to 27,609.21, 38,103.90 and 15,671.43

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Solution

The fourth proportional to 27,609.21, 38,103.90 and 15,671.43 is: 21,628.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,609.21 : 38,103.90 = 15,671.43 : x
  2. Step 2: Convert to fraction form
    27,609.21/38,103.90 = 15,671.43/x
  3. Step 3: Cross multiply
    27,609.21x = 38,103.90 × 15,671.43
  4. Step 4: Simplify right side
    27,609.21x = 597,142,601.58
  5. Step 5: Solve for x
    x = 597,142,601.58/27,609.21
  6. Step 6: Final answer
    x = 21,628.38

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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.