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Finding the Fourth Proportional to 18,546.72, 27,771.48 and 12,714.72

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Solution

The fourth proportional to 18,546.72, 27,771.48 and 12,714.72 is: 19,038.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,546.72 : 27,771.48 = 12,714.72 : x
  2. Step 2: Convert to fraction form
    18,546.72/27,771.48 = 12,714.72/x
  3. Step 3: Cross multiply
    18,546.72x = 27,771.48 × 12,714.72
  4. Step 4: Simplify right side
    18,546.72x = 353,106,592.19
  5. Step 5: Solve for x
    x = 353,106,592.19/18,546.72
  6. Step 6: Final answer
    x = 19,038.76

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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.