Home / 18,721,879.60-28,082,819.40-8,644,183.60

Finding the Fourth Proportional to 18,721,879.60, 28,082,819.40 and 8,644,183.60

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Solution

The fourth proportional to 18,721,879.60, 28,082,819.40 and 8,644,183.60 is: 12,966,275.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,879.60 : 28,082,819.40 = 8,644,183.60 : x
  2. Step 2: Convert to fraction form
    18,721,879.60/28,082,819.40 = 8,644,183.60/x
  3. Step 3: Cross multiply
    18,721,879.60x = 28,082,819.40 × 8,644,183.60
  4. Step 4: Simplify right side
    18,721,879.60x = 242,753,046,899,241.81
  5. Step 5: Solve for x
    x = 242,753,046,899,241.81/18,721,879.60
  6. Step 6: Final answer
    x = 12,966,275.40

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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.