Home / 13,321.80-18,384.24-7,353.72

Finding the Fourth Proportional to 13,321.80, 18,384.24 and 7,353.72

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Solution

The fourth proportional to 13,321.80, 18,384.24 and 7,353.72 is: 10,148.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.80 : 18,384.24 = 7,353.72 : x
  2. Step 2: Convert to fraction form
    13,321.80/18,384.24 = 7,353.72/x
  3. Step 3: Cross multiply
    13,321.80x = 18,384.24 × 7,353.72
  4. Step 4: Simplify right side
    13,321.80x = 135,192,553.37
  5. Step 5: Solve for x
    x = 135,192,553.37/13,321.80
  6. Step 6: Final answer
    x = 10,148.22

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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.