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Finding the Fourth Proportional to 18,657.74, 27,996.35 and 8,267.06

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Solution

The fourth proportional to 18,657.74, 27,996.35 and 8,267.06 is: 12,404.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.74 : 27,996.35 = 8,267.06 : x
  2. Step 2: Convert to fraction form
    18,657.74/27,996.35 = 8,267.06/x
  3. Step 3: Cross multiply
    18,657.74x = 27,996.35 × 8,267.06
  4. Step 4: Simplify right side
    18,657.74x = 231,447,533.89
  5. Step 5: Solve for x
    x = 231,447,533.89/18,657.74
  6. Step 6: Final answer
    x = 12,404.91

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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.