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Finding the Fourth Proportional to 13,318.00, 18,378.82 and 7,349.67

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Solution

The fourth proportional to 13,318.00, 18,378.82 and 7,349.67 is: 10,142.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.00 : 18,378.82 = 7,349.67 : x
  2. Step 2: Convert to fraction form
    13,318.00/18,378.82 = 7,349.67/x
  3. Step 3: Cross multiply
    13,318.00x = 18,378.82 × 7,349.67
  4. Step 4: Simplify right side
    13,318.00x = 135,078,133.35
  5. Step 5: Solve for x
    x = 135,078,133.35/13,318.00
  6. Step 6: Final answer
    x = 10,142.53

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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.