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Finding the Fourth Proportional to 13,305.31, 18,361.07 and 7,337.53

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Solution

The fourth proportional to 13,305.31, 18,361.07 and 7,337.53 is: 10,125.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.31 : 18,361.07 = 7,337.53 : x
  2. Step 2: Convert to fraction form
    13,305.31/18,361.07 = 7,337.53/x
  3. Step 3: Cross multiply
    13,305.31x = 18,361.07 × 7,337.53
  4. Step 4: Simplify right side
    13,305.31x = 134,724,819.37
  5. Step 5: Solve for x
    x = 134,724,819.37/13,305.31
  6. Step 6: Final answer
    x = 10,125.64

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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.