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Finding the Fourth Proportional to 13,373, 18,435.44 and 9,381.72

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Solution

The fourth proportional to 13,373, 18,435.44 and 9,381.72 is: 12,933.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,373 : 18,435.44 = 9,381.72 : x
  2. Step 2: Convert to fraction form
    13,373/18,435.44 = 9,381.72/x
  3. Step 3: Cross multiply
    13,373x = 18,435.44 × 9,381.72
  4. Step 4: Simplify right side
    13,373x = 172,956,136.16
  5. Step 5: Solve for x
    x = 172,956,136.16/13,373
  6. Step 6: Final answer
    x = 12,933.23

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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.