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Finding the Fourth Proportional to 18,474.89, 27,712.08 and 12,537.05

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Solution

The fourth proportional to 18,474.89, 27,712.08 and 12,537.05 is: 18,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.89 : 27,712.08 = 12,537.05 : x
  2. Step 2: Convert to fraction form
    18,474.89/27,712.08 = 12,537.05/x
  3. Step 3: Cross multiply
    18,474.89x = 27,712.08 × 12,537.05
  4. Step 4: Simplify right side
    18,474.89x = 347,427,594.00
  5. Step 5: Solve for x
    x = 347,427,594.00/18,474.89
  6. Step 6: Final answer
    x = 18,805.40

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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.