Home / 20,501.64-30,743.84-7,171.79

Finding the Fourth Proportional to 20,501.64, 30,743.84 and 7,171.79

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Solution

The fourth proportional to 20,501.64, 30,743.84 and 7,171.79 is: 10,754.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501.64 : 30,743.84 = 7,171.79 : x
  2. Step 2: Convert to fraction form
    20,501.64/30,743.84 = 7,171.79/x
  3. Step 3: Cross multiply
    20,501.64x = 30,743.84 × 7,171.79
  4. Step 4: Simplify right side
    20,501.64x = 220,488,228.48
  5. Step 5: Solve for x
    x = 220,488,228.48/20,501.64
  6. Step 6: Final answer
    x = 10,754.66

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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.