Home / 20,623.92-30,938.96-8,777.60

Finding the Fourth Proportional to 20,623.92, 30,938.96 and 8,777.60

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Solution

The fourth proportional to 20,623.92, 30,938.96 and 8,777.60 is: 13,167.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.92 : 30,938.96 = 8,777.60 : x
  2. Step 2: Convert to fraction form
    20,623.92/30,938.96 = 8,777.60/x
  3. Step 3: Cross multiply
    20,623.92x = 30,938.96 × 8,777.60
  4. Step 4: Simplify right side
    20,623.92x = 271,569,815.30
  5. Step 5: Solve for x
    x = 271,569,815.30/20,623.92
  6. Step 6: Final answer
    x = 13,167.71

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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.