Home / 20,788,999.70-31,136,260.35-13,136,249.30

Finding the Fourth Proportional to 20,788,999.70, 31,136,260.35 and 13,136,249.30

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Solution

The fourth proportional to 20,788,999.70, 31,136,260.35 and 13,136,249.30 is: 19,674,524.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788,999.70 : 31,136,260.35 = 13,136,249.30 : x
  2. Step 2: Convert to fraction form
    20,788,999.70/31,136,260.35 = 13,136,249.30/x
  3. Step 3: Cross multiply
    20,788,999.70x = 31,136,260.35 × 13,136,249.30
  4. Step 4: Simplify right side
    20,788,999.70x = 409,013,678,227,305.31
  5. Step 5: Solve for x
    x = 409,013,678,227,305.31/20,788,999.70
  6. Step 6: Final answer
    x = 19,674,524.23

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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.