Home / 20,540.88-30,815.96-6,501.76

Finding the Fourth Proportional to 20,540.88, 30,815.96 and 6,501.76

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Solution

The fourth proportional to 20,540.88, 30,815.96 and 6,501.76 is: 9,754.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,540.88 : 30,815.96 = 6,501.76 : x
  2. Step 2: Convert to fraction form
    20,540.88/30,815.96 = 6,501.76/x
  3. Step 3: Cross multiply
    20,540.88x = 30,815.96 × 6,501.76
  4. Step 4: Simplify right side
    20,540.88x = 200,357,976.09
  5. Step 5: Solve for x
    x = 200,357,976.09/20,540.88
  6. Step 6: Final answer
    x = 9,754.11

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1.5x scale

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.