Home / 20,171.46-30,257.10-7,688.64

Finding the Fourth Proportional to 20,171.46, 30,257.10 and 7,688.64

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Solution

The fourth proportional to 20,171.46, 30,257.10 and 7,688.64 is: 11,532.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.46 : 30,257.10 = 7,688.64 : x
  2. Step 2: Convert to fraction form
    20,171.46/30,257.10 = 7,688.64/x
  3. Step 3: Cross multiply
    20,171.46x = 30,257.10 × 7,688.64
  4. Step 4: Simplify right side
    20,171.46x = 232,635,949.34
  5. Step 5: Solve for x
    x = 232,635,949.34/20,171.46
  6. Step 6: Final answer
    x = 11,532.93

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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.