Home / 20,206,777.31-30,329,328.46-12,507,131.42

Finding the Fourth Proportional to 20,206,777.31, 30,329,328.46 and 12,507,131.42

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Solution

The fourth proportional to 20,206,777.31, 30,329,328.46 and 12,507,131.42 is: 18,772,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206,777.31 : 30,329,328.46 = 12,507,131.42 : x
  2. Step 2: Convert to fraction form
    20,206,777.31/30,329,328.46 = 12,507,131.42/x
  3. Step 3: Cross multiply
    20,206,777.31x = 30,329,328.46 × 12,507,131.42
  4. Step 4: Simplify right side
    20,206,777.31x = 379,332,896,974,121.69
  5. Step 5: Solve for x
    x = 379,332,896,974,121.69/20,206,777.31
  6. Step 6: Final answer
    x = 18,772,557.90

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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.