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Finding the Fourth Proportional to 18,998.96, 28,496.75 and 8,469.50

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Solution

The fourth proportional to 18,998.96, 28,496.75 and 8,469.50 is: 12,703.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.96 : 28,496.75 = 8,469.50 : x
  2. Step 2: Convert to fraction form
    18,998.96/28,496.75 = 8,469.50/x
  3. Step 3: Cross multiply
    18,998.96x = 28,496.75 × 8,469.50
  4. Step 4: Simplify right side
    18,998.96x = 241,353,039.29
  5. Step 5: Solve for x
    x = 241,353,039.29/18,998.96
  6. Step 6: Final answer
    x = 12,703.49

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.