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Finding the Fourth Proportional to 18,455.60, 27,687.04 and 6,768.92

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Solution

The fourth proportional to 18,455.60, 27,687.04 and 6,768.92 is: 10,154.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455.60 : 27,687.04 = 6,768.92 : x
  2. Step 2: Convert to fraction form
    18,455.60/27,687.04 = 6,768.92/x
  3. Step 3: Cross multiply
    18,455.60x = 27,687.04 × 6,768.92
  4. Step 4: Simplify right side
    18,455.60x = 187,411,220.36
  5. Step 5: Solve for x
    x = 187,411,220.36/18,455.60
  6. Step 6: Final answer
    x = 10,154.71

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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.