Home / 13,724.48-18,940.14-8,416.24

Finding the Fourth Proportional to 13,724.48, 18,940.14 and 8,416.24

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Solution

The fourth proportional to 13,724.48, 18,940.14 and 8,416.24 is: 11,614.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.48 : 18,940.14 = 8,416.24 : x
  2. Step 2: Convert to fraction form
    13,724.48/18,940.14 = 8,416.24/x
  3. Step 3: Cross multiply
    13,724.48x = 18,940.14 × 8,416.24
  4. Step 4: Simplify right side
    13,724.48x = 159,404,763.87
  5. Step 5: Solve for x
    x = 159,404,763.87/13,724.48
  6. Step 6: Final answer
    x = 11,614.63

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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.