Home / 20,471.96-30,715.46-8,628.73

Finding the Fourth Proportional to 20,471.96, 30,715.46 and 8,628.73

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Solution

The fourth proportional to 20,471.96, 30,715.46 and 8,628.73 is: 12,946.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,471.96 : 30,715.46 = 8,628.73 : x
  2. Step 2: Convert to fraction form
    20,471.96/30,715.46 = 8,628.73/x
  3. Step 3: Cross multiply
    20,471.96x = 30,715.46 × 8,628.73
  4. Step 4: Simplify right side
    20,471.96x = 265,035,214.44
  5. Step 5: Solve for x
    x = 265,035,214.44/20,471.96
  6. Step 6: Final answer
    x = 12,946.25

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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.