Home / 20,808,003.80-31,212,005.70-18,288,579.80

Finding the Fourth Proportional to 20,808,003.80, 31,212,005.70 and 18,288,579.80

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Solution

The fourth proportional to 20,808,003.80, 31,212,005.70 and 18,288,579.80 is: 27,432,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808,003.80 : 31,212,005.70 = 18,288,579.80 : x
  2. Step 2: Convert to fraction form
    20,808,003.80/31,212,005.70 = 18,288,579.80/x
  3. Step 3: Cross multiply
    20,808,003.80x = 31,212,005.70 × 18,288,579.80
  4. Step 4: Simplify right side
    20,808,003.80x = 570,823,256,962,504.88
  5. Step 5: Solve for x
    x = 570,823,256,962,504.88/20,808,003.80
  6. Step 6: Final answer
    x = 27,432,869.70

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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.