Home / 13,504.35-18,635.55-7,371.81

Finding the Fourth Proportional to 13,504.35, 18,635.55 and 7,371.81

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Solution

The fourth proportional to 13,504.35, 18,635.55 and 7,371.81 is: 10,172.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,504.35 : 18,635.55 = 7,371.81 : x
  2. Step 2: Convert to fraction form
    13,504.35/18,635.55 = 7,371.81/x
  3. Step 3: Cross multiply
    13,504.35x = 18,635.55 × 7,371.81
  4. Step 4: Simplify right side
    13,504.35x = 137,377,733.85
  5. Step 5: Solve for x
    x = 137,377,733.85/13,504.35
  6. Step 6: Final answer
    x = 10,172.85

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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.