Home / 18,490,615.80-27,735,923.70-12,443,998.20

Finding the Fourth Proportional to 18,490,615.80, 27,735,923.70 and 12,443,998.20

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Solution

The fourth proportional to 18,490,615.80, 27,735,923.70 and 12,443,998.20 is: 18,665,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490,615.80 : 27,735,923.70 = 12,443,998.20 : x
  2. Step 2: Convert to fraction form
    18,490,615.80/27,735,923.70 = 12,443,998.20/x
  3. Step 3: Cross multiply
    18,490,615.80x = 27,735,923.70 × 12,443,998.20
  4. Step 4: Simplify right side
    18,490,615.80x = 345,145,784,598,137.31
  5. Step 5: Solve for x
    x = 345,145,784,598,137.31/18,490,615.80
  6. Step 6: Final answer
    x = 18,665,997.30

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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.