Home / 13,581.38-18,738.69-7,837.38

Finding the Fourth Proportional to 13,581.38, 18,738.69 and 7,837.38

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Solution

The fourth proportional to 13,581.38, 18,738.69 and 7,837.38 is: 10,813.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.38 : 18,738.69 = 7,837.38 : x
  2. Step 2: Convert to fraction form
    13,581.38/18,738.69 = 7,837.38/x
  3. Step 3: Cross multiply
    13,581.38x = 18,738.69 × 7,837.38
  4. Step 4: Simplify right side
    13,581.38x = 146,862,234.23
  5. Step 5: Solve for x
    x = 146,862,234.23/13,581.38
  6. Step 6: Final answer
    x = 10,813.50

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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.