Home / 20,485.64-30,728.46-6,635.72

Finding the Fourth Proportional to 20,485.64, 30,728.46 and 6,635.72

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Solution

The fourth proportional to 20,485.64, 30,728.46 and 6,635.72 is: 9,953.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.64 : 30,728.46 = 6,635.72 : x
  2. Step 2: Convert to fraction form
    20,485.64/30,728.46 = 6,635.72/x
  3. Step 3: Cross multiply
    20,485.64x = 30,728.46 × 6,635.72
  4. Step 4: Simplify right side
    20,485.64x = 203,905,456.59
  5. Step 5: Solve for x
    x = 203,905,456.59/20,485.64
  6. Step 6: Final answer
    x = 9,953.58

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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.