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Finding the Fourth Proportional to 13,305.50, 18,361.50 and 7,337.30

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Solution

The fourth proportional to 13,305.50, 18,361.50 and 7,337.30 is: 10,125.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.50 : 18,361.50 = 7,337.30 : x
  2. Step 2: Convert to fraction form
    13,305.50/18,361.50 = 7,337.30/x
  3. Step 3: Cross multiply
    13,305.50x = 18,361.50 × 7,337.30
  4. Step 4: Simplify right side
    13,305.50x = 134,723,833.95
  5. Step 5: Solve for x
    x = 134,723,833.95/13,305.50
  6. Step 6: Final answer
    x = 10,125.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.