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Finding the Fourth Proportional to 43,553.92, 65,343.56 and 13,971.12

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Solution

The fourth proportional to 43,553.92, 65,343.56 and 13,971.12 is: 20,960.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,553.92 : 65,343.56 = 13,971.12 : x
  2. Step 2: Convert to fraction form
    43,553.92/65,343.56 = 13,971.12/x
  3. Step 3: Cross multiply
    43,553.92x = 65,343.56 × 13,971.12
  4. Step 4: Simplify right side
    43,553.92x = 912,922,717.99
  5. Step 5: Solve for x
    x = 912,922,717.99/43,553.92
  6. Step 6: Final answer
    x = 20,960.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.