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Finding the Fourth Proportional to 18,462.62, 27,652.23 and 12,940.55

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Solution

The fourth proportional to 18,462.62, 27,652.23 and 12,940.55 is: 19,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,462.62 : 27,652.23 = 12,940.55 : x
  2. Step 2: Convert to fraction form
    18,462.62/27,652.23 = 12,940.55/x
  3. Step 3: Cross multiply
    18,462.62x = 27,652.23 × 12,940.55
  4. Step 4: Simplify right side
    18,462.62x = 357,835,064.93
  5. Step 5: Solve for x
    x = 357,835,064.93/18,462.62
  6. Step 6: Final answer
    x = 19,381.60

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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.