Home / 27,667.76-38,179.96-15,729.44

Finding the Fourth Proportional to 27,667.76, 38,179.96 and 15,729.44

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Solution

The fourth proportional to 27,667.76, 38,179.96 and 15,729.44 is: 21,705.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,667.76 : 38,179.96 = 15,729.44 : x
  2. Step 2: Convert to fraction form
    27,667.76/38,179.96 = 15,729.44/x
  3. Step 3: Cross multiply
    27,667.76x = 38,179.96 × 15,729.44
  4. Step 4: Simplify right side
    27,667.76x = 600,549,390.02
  5. Step 5: Solve for x
    x = 600,549,390.02/27,667.76
  6. Step 6: Final answer
    x = 21,705.75

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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.