Home / 30,263.78-45,419.15-20,968.96

Finding the Fourth Proportional to 30,263.78, 45,419.15 and 20,968.96

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Solution

The fourth proportional to 30,263.78, 45,419.15 and 20,968.96 is: 31,469.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,263.78 : 45,419.15 = 20,968.96 : x
  2. Step 2: Convert to fraction form
    30,263.78/45,419.15 = 20,968.96/x
  3. Step 3: Cross multiply
    30,263.78x = 45,419.15 × 20,968.96
  4. Step 4: Simplify right side
    30,263.78x = 952,392,278.46
  5. Step 5: Solve for x
    x = 952,392,278.46/30,263.78
  6. Step 6: Final answer
    x = 31,469.71

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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.