Home / 20,385.30-30,563.55-9,297.30

Finding the Fourth Proportional to 20,385.30, 30,563.55 and 9,297.30

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Solution

The fourth proportional to 20,385.30, 30,563.55 and 9,297.30 is: 13,939.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385.30 : 30,563.55 = 9,297.30 : x
  2. Step 2: Convert to fraction form
    20,385.30/30,563.55 = 9,297.30/x
  3. Step 3: Cross multiply
    20,385.30x = 30,563.55 × 9,297.30
  4. Step 4: Simplify right side
    20,385.30x = 284,158,493.42
  5. Step 5: Solve for x
    x = 284,158,493.42/20,385.30
  6. Step 6: Final answer
    x = 13,939.38

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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.