Home / 27,109.28-40,667.84-8,390.88

Finding the Fourth Proportional to 27,109.28, 40,667.84 and 8,390.88

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Solution

The fourth proportional to 27,109.28, 40,667.84 and 8,390.88 is: 12,587.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,109.28 : 40,667.84 = 8,390.88 : x
  2. Step 2: Convert to fraction form
    27,109.28/40,667.84 = 8,390.88/x
  3. Step 3: Cross multiply
    27,109.28x = 40,667.84 × 8,390.88
  4. Step 4: Simplify right side
    27,109.28x = 341,238,965.30
  5. Step 5: Solve for x
    x = 341,238,965.30/27,109.28
  6. Step 6: Final answer
    x = 12,587.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.