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Finding the Fourth Proportional to 18,624.18, 27,936.41 and 7,528.80

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Solution

The fourth proportional to 18,624.18, 27,936.41 and 7,528.80 is: 11,293.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.18 : 27,936.41 = 7,528.80 : x
  2. Step 2: Convert to fraction form
    18,624.18/27,936.41 = 7,528.80/x
  3. Step 3: Cross multiply
    18,624.18x = 27,936.41 × 7,528.80
  4. Step 4: Simplify right side
    18,624.18x = 210,327,605.96
  5. Step 5: Solve for x
    x = 210,327,605.96/18,624.18
  6. Step 6: Final answer
    x = 11,293.25

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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.