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Finding the Fourth Proportional to 18,009,853.96, 24,853,872.18 and 9,861,850.12

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Solution

The fourth proportional to 18,009,853.96, 24,853,872.18 and 9,861,850.12 is: 13,609,503.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009,853.96 : 24,853,872.18 = 9,861,850.12 : x
  2. Step 2: Convert to fraction form
    18,009,853.96/24,853,872.18 = 9,861,850.12/x
  3. Step 3: Cross multiply
    18,009,853.96x = 24,853,872.18 × 9,861,850.12
  4. Step 4: Simplify right side
    18,009,853.96x = 245,105,162,340,797.62
  5. Step 5: Solve for x
    x = 245,105,162,340,797.62/18,009,853.96
  6. Step 6: Final answer
    x = 13,609,503.05

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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.