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Finding the Fourth Proportional to 18,768.05, 28,152.04 and 8,901.94

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Solution

The fourth proportional to 18,768.05, 28,152.04 and 8,901.94 is: 13,352.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.05 : 28,152.04 = 8,901.94 : x
  2. Step 2: Convert to fraction form
    18,768.05/28,152.04 = 8,901.94/x
  3. Step 3: Cross multiply
    18,768.05x = 28,152.04 × 8,901.94
  4. Step 4: Simplify right side
    18,768.05x = 250,607,770.96
  5. Step 5: Solve for x
    x = 250,607,770.96/18,768.05
  6. Step 6: Final answer
    x = 13,352.89

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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.