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Finding the Fourth Proportional to 18,453.53, 27,638.67 and 8,572.01

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Solution

The fourth proportional to 18,453.53, 27,638.67 and 8,572.01 is: 12,838.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.53 : 27,638.67 = 8,572.01 : x
  2. Step 2: Convert to fraction form
    18,453.53/27,638.67 = 8,572.01/x
  3. Step 3: Cross multiply
    18,453.53x = 27,638.67 × 8,572.01
  4. Step 4: Simplify right side
    18,453.53x = 236,919,005.05
  5. Step 5: Solve for x
    x = 236,919,005.05/18,453.53
  6. Step 6: Final answer
    x = 12,838.68

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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.