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Finding the Fourth Proportional to 13,313.22, 18,373.08 and 7,344.90

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Solution

The fourth proportional to 13,313.22, 18,373.08 and 7,344.90 is: 10,136.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.22 : 18,373.08 = 7,344.90 : x
  2. Step 2: Convert to fraction form
    13,313.22/18,373.08 = 7,344.90/x
  3. Step 3: Cross multiply
    13,313.22x = 18,373.08 × 7,344.90
  4. Step 4: Simplify right side
    13,313.22x = 134,948,435.29
  5. Step 5: Solve for x
    x = 134,948,435.29/13,313.22
  6. Step 6: Final answer
    x = 10,136.42

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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.