Home / 20,789,006.20-31,136,270.10-13,136,255.80

Finding the Fourth Proportional to 20,789,006.20, 31,136,270.10 and 13,136,255.80

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Solution

The fourth proportional to 20,789,006.20, 31,136,270.10 and 13,136,255.80 is: 19,674,533.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,789,006.20 : 31,136,270.10 = 13,136,255.80 : x
  2. Step 2: Convert to fraction form
    20,789,006.20/31,136,270.10 = 13,136,255.80/x
  3. Step 3: Cross multiply
    20,789,006.20x = 31,136,270.10 × 13,136,255.80
  4. Step 4: Simplify right side
    20,789,006.20x = 409,014,008,691,491.62
  5. Step 5: Solve for x
    x = 409,014,008,691,491.62/20,789,006.20
  6. Step 6: Final answer
    x = 19,674,533.97

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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.