Home / 13,299.36-18,351.72-7,330.68

Finding the Fourth Proportional to 13,299.36, 18,351.72 and 7,330.68

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Solution

The fourth proportional to 13,299.36, 18,351.72 and 7,330.68 is: 10,115.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.36 : 18,351.72 = 7,330.68 : x
  2. Step 2: Convert to fraction form
    13,299.36/18,351.72 = 7,330.68/x
  3. Step 3: Cross multiply
    13,299.36x = 18,351.72 × 7,330.68
  4. Step 4: Simplify right side
    13,299.36x = 134,530,586.77
  5. Step 5: Solve for x
    x = 134,530,586.77/13,299.36
  6. Step 6: Final answer
    x = 10,115.57

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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.