Home / 20,206,769.70-30,329,317.05-12,507,123.79

Finding the Fourth Proportional to 20,206,769.70, 30,329,317.05 and 12,507,123.79

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Solution

The fourth proportional to 20,206,769.70, 30,329,317.05 and 12,507,123.79 is: 18,772,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206,769.70 : 30,329,317.05 = 12,507,123.79 : x
  2. Step 2: Convert to fraction form
    20,206,769.70/30,329,317.05 = 12,507,123.79/x
  3. Step 3: Cross multiply
    20,206,769.70x = 30,329,317.05 × 12,507,123.79
  4. Step 4: Simplify right side
    20,206,769.70x = 379,332,522,810,507.62
  5. Step 5: Solve for x
    x = 379,332,522,810,507.62/20,206,769.70
  6. Step 6: Final answer
    x = 18,772,546.45

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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.