Home / 20,485.23-30,737.87-7,338.61

Finding the Fourth Proportional to 20,485.23, 30,737.87 and 7,338.61

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Solution

The fourth proportional to 20,485.23, 30,737.87 and 7,338.61 is: 11,011.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.23 : 30,737.87 = 7,338.61 : x
  2. Step 2: Convert to fraction form
    20,485.23/30,737.87 = 7,338.61/x
  3. Step 3: Cross multiply
    20,485.23x = 30,737.87 × 7,338.61
  4. Step 4: Simplify right side
    20,485.23x = 225,573,240.16
  5. Step 5: Solve for x
    x = 225,573,240.16/20,485.23
  6. Step 6: Final answer
    x = 11,011.51

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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.