Home / 34,286.14-47,321.04-20,139.76

Finding the Fourth Proportional to 34,286.14, 47,321.04 and 20,139.76

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Solution

The fourth proportional to 34,286.14, 47,321.04 and 20,139.76 is: 27,796.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,286.14 : 47,321.04 = 20,139.76 : x
  2. Step 2: Convert to fraction form
    34,286.14/47,321.04 = 20,139.76/x
  3. Step 3: Cross multiply
    34,286.14x = 47,321.04 × 20,139.76
  4. Step 4: Simplify right side
    34,286.14x = 953,034,388.55
  5. Step 5: Solve for x
    x = 953,034,388.55/34,286.14
  6. Step 6: Final answer
    x = 27,796.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.