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Finding the Fourth Proportional to 18,645.96, 27,973.80 and 6,960.09

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Solution

The fourth proportional to 18,645.96, 27,973.80 and 6,960.09 is: 10,441.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.96 : 27,973.80 = 6,960.09 : x
  2. Step 2: Convert to fraction form
    18,645.96/27,973.80 = 6,960.09/x
  3. Step 3: Cross multiply
    18,645.96x = 27,973.80 × 6,960.09
  4. Step 4: Simplify right side
    18,645.96x = 194,700,165.64
  5. Step 5: Solve for x
    x = 194,700,165.64/18,645.96
  6. Step 6: Final answer
    x = 10,441.95

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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.