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Finding the Fourth Proportional to 27,991.92, 38,627.08 and 15,416.67

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Solution

The fourth proportional to 27,991.92, 38,627.08 and 15,416.67 is: 21,274.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,991.92 : 38,627.08 = 15,416.67 : x
  2. Step 2: Convert to fraction form
    27,991.92/38,627.08 = 15,416.67/x
  3. Step 3: Cross multiply
    27,991.92x = 38,627.08 × 15,416.67
  4. Step 4: Simplify right side
    27,991.92x = 595,500,906.88
  5. Step 5: Solve for x
    x = 595,500,906.88/27,991.92
  6. Step 6: Final answer
    x = 21,274.03

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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.