Home / 20,035.12-30,069.96-7,731.76

Finding the Fourth Proportional to 20,035.12, 30,069.96 and 7,731.76

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Solution

The fourth proportional to 20,035.12, 30,069.96 and 7,731.76 is: 11,604.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,035.12 : 30,069.96 = 7,731.76 : x
  2. Step 2: Convert to fraction form
    20,035.12/30,069.96 = 7,731.76/x
  3. Step 3: Cross multiply
    20,035.12x = 30,069.96 × 7,731.76
  4. Step 4: Simplify right side
    20,035.12x = 232,493,713.93
  5. Step 5: Solve for x
    x = 232,493,713.93/20,035.12
  6. Step 6: Final answer
    x = 11,604.31

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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.