Home / 21,256,391.25-31,882,056.03-12,507,900.39

Finding the Fourth Proportional to 21,256,391.25, 31,882,056.03 and 12,507,900.39

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Solution

The fourth proportional to 21,256,391.25, 31,882,056.03 and 12,507,900.39 is: 18,760,361.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,256,391.25 : 31,882,056.03 = 12,507,900.39 : x
  2. Step 2: Convert to fraction form
    21,256,391.25/31,882,056.03 = 12,507,900.39/x
  3. Step 3: Cross multiply
    21,256,391.25x = 31,882,056.03 × 12,507,900.39
  4. Step 4: Simplify right side
    21,256,391.25x = 398,777,581,051,638.88
  5. Step 5: Solve for x
    x = 398,777,581,051,638.88/21,256,391.25
  6. Step 6: Final answer
    x = 18,760,361.36

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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.