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Finding the Fourth Proportional to 18,624.40, 27,936.60 and 4,773.40

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Solution

The fourth proportional to 18,624.40, 27,936.60 and 4,773.40 is: 7,160.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.40 : 27,936.60 = 4,773.40 : x
  2. Step 2: Convert to fraction form
    18,624.40/27,936.60 = 4,773.40/x
  3. Step 3: Cross multiply
    18,624.40x = 27,936.60 × 4,773.40
  4. Step 4: Simplify right side
    18,624.40x = 133,352,566.44
  5. Step 5: Solve for x
    x = 133,352,566.44/18,624.40
  6. Step 6: Final answer
    x = 7,160.10

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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.