Home / 20,745.46-31,090.40-19,416.86

Finding the Fourth Proportional to 20,745.46, 31,090.40 and 19,416.86

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Solution

The fourth proportional to 20,745.46, 31,090.40 and 19,416.86 is: 29,099.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.46 : 31,090.40 = 19,416.86 : x
  2. Step 2: Convert to fraction form
    20,745.46/31,090.40 = 19,416.86/x
  3. Step 3: Cross multiply
    20,745.46x = 31,090.40 × 19,416.86
  4. Step 4: Simplify right side
    20,745.46x = 603,677,965.69
  5. Step 5: Solve for x
    x = 603,677,965.69/20,745.46
  6. Step 6: Final answer
    x = 29,099.28

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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.