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Finding the Fourth Proportional to 13,361.91, 18,438.18 and 9,046.22

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Solution

The fourth proportional to 13,361.91, 18,438.18 and 9,046.22 is: 12,482.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.91 : 18,438.18 = 9,046.22 : x
  2. Step 2: Convert to fraction form
    13,361.91/18,438.18 = 9,046.22/x
  3. Step 3: Cross multiply
    13,361.91x = 18,438.18 × 9,046.22
  4. Step 4: Simplify right side
    13,361.91x = 166,795,878.78
  5. Step 5: Solve for x
    x = 166,795,878.78/13,361.91
  6. Step 6: Final answer
    x = 12,482.94

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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.