Home / 20,784.25-31,157.34-7,626.61

Finding the Fourth Proportional to 20,784.25, 31,157.34 and 7,626.61

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Solution

The fourth proportional to 20,784.25, 31,157.34 and 7,626.61 is: 11,432.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.25 : 31,157.34 = 7,626.61 : x
  2. Step 2: Convert to fraction form
    20,784.25/31,157.34 = 7,626.61/x
  3. Step 3: Cross multiply
    20,784.25x = 31,157.34 × 7,626.61
  4. Step 4: Simplify right side
    20,784.25x = 237,624,880.82
  5. Step 5: Solve for x
    x = 237,624,880.82/20,784.25
  6. Step 6: Final answer
    x = 11,432.93

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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.