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Finding the Fourth Proportional to 18,272.92, 27,410.70 and 5,126.20

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Solution

The fourth proportional to 18,272.92, 27,410.70 and 5,126.20 is: 7,689.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,272.92 : 27,410.70 = 5,126.20 : x
  2. Step 2: Convert to fraction form
    18,272.92/27,410.70 = 5,126.20/x
  3. Step 3: Cross multiply
    18,272.92x = 27,410.70 × 5,126.20
  4. Step 4: Simplify right side
    18,272.92x = 140,512,730.34
  5. Step 5: Solve for x
    x = 140,512,730.34/18,272.92
  6. Step 6: Final answer
    x = 7,689.67

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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.