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Finding the Fourth Proportional to 18,604.40, 27,910.20 and 5,457.20

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Solution

The fourth proportional to 18,604.40, 27,910.20 and 5,457.20 is: 8,186.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,604.40 : 27,910.20 = 5,457.20 : x
  2. Step 2: Convert to fraction form
    18,604.40/27,910.20 = 5,457.20/x
  3. Step 3: Cross multiply
    18,604.40x = 27,910.20 × 5,457.20
  4. Step 4: Simplify right side
    18,604.40x = 152,311,543.44
  5. Step 5: Solve for x
    x = 152,311,543.44/18,604.40
  6. Step 6: Final answer
    x = 8,186.86

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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.