Home / 13,305.21-18,361.31-7,337.09

Finding the Fourth Proportional to 13,305.21, 18,361.31 and 7,337.09

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Solution

The fourth proportional to 13,305.21, 18,361.31 and 7,337.09 is: 10,125.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.21 : 18,361.31 = 7,337.09 : x
  2. Step 2: Convert to fraction form
    13,305.21/18,361.31 = 7,337.09/x
  3. Step 3: Cross multiply
    13,305.21x = 18,361.31 × 7,337.09
  4. Step 4: Simplify right side
    13,305.21x = 134,718,583.99
  5. Step 5: Solve for x
    x = 134,718,583.99/13,305.21
  6. Step 6: Final answer
    x = 10,125.25

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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.