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Finding the Fourth Proportional to 16,271.28, 22,454.40 and 8,819.28

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Solution

The fourth proportional to 16,271.28, 22,454.40 and 8,819.28 is: 12,170.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,271.28 : 22,454.40 = 8,819.28 : x
  2. Step 2: Convert to fraction form
    16,271.28/22,454.40 = 8,819.28/x
  3. Step 3: Cross multiply
    16,271.28x = 22,454.40 × 8,819.28
  4. Step 4: Simplify right side
    16,271.28x = 198,031,640.83
  5. Step 5: Solve for x
    x = 198,031,640.83/16,271.28
  6. Step 6: Final answer
    x = 12,170.62

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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.