Home / 13,318.22-18,379.12-7,349.89

Finding the Fourth Proportional to 13,318.22, 18,379.12 and 7,349.89

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Solution

The fourth proportional to 13,318.22, 18,379.12 and 7,349.89 is: 10,142.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.22 : 18,379.12 = 7,349.89 : x
  2. Step 2: Convert to fraction form
    13,318.22/18,379.12 = 7,349.89/x
  3. Step 3: Cross multiply
    13,318.22x = 18,379.12 × 7,349.89
  4. Step 4: Simplify right side
    13,318.22x = 135,084,510.30
  5. Step 5: Solve for x
    x = 135,084,510.30/13,318.22
  6. Step 6: Final answer
    x = 10,142.84

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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.