Home / 18,342,389.44-25,318,138.58-11,815,998.72

Finding the Fourth Proportional to 18,342,389.44, 25,318,138.58 and 11,815,998.72

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Solution

The fourth proportional to 18,342,389.44, 25,318,138.58 and 11,815,998.72 is: 16,309,712.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342,389.44 : 25,318,138.58 = 11,815,998.72 : x
  2. Step 2: Convert to fraction form
    18,342,389.44/25,318,138.58 = 11,815,998.72/x
  3. Step 3: Cross multiply
    18,342,389.44x = 25,318,138.58 × 11,815,998.72
  4. Step 4: Simplify right side
    18,342,389.44x = 299,159,093,054,062.62
  5. Step 5: Solve for x
    x = 299,159,093,054,062.62/18,342,389.44
  6. Step 6: Final answer
    x = 16,309,712.21

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.