Home / 13,311.39-18,369.72-7,343.07

Finding the Fourth Proportional to 13,311.39, 18,369.72 and 7,343.07

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Solution

The fourth proportional to 13,311.39, 18,369.72 and 7,343.07 is: 10,133.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.39 : 18,369.72 = 7,343.07 : x
  2. Step 2: Convert to fraction form
    13,311.39/18,369.72 = 7,343.07/x
  3. Step 3: Cross multiply
    13,311.39x = 18,369.72 × 7,343.07
  4. Step 4: Simplify right side
    13,311.39x = 134,890,103.13
  5. Step 5: Solve for x
    x = 134,890,103.13/13,311.39
  6. Step 6: Final answer
    x = 10,133.44

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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.