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Finding the Fourth Proportional to 11,170.71, 16,759.71 and 5,621.20

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Solution

The fourth proportional to 11,170.71, 16,759.71 and 5,621.20 is: 8,433.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,170.71 : 16,759.71 = 5,621.20 : x
  2. Step 2: Convert to fraction form
    11,170.71/16,759.71 = 5,621.20/x
  3. Step 3: Cross multiply
    11,170.71x = 16,759.71 × 5,621.20
  4. Step 4: Simplify right side
    11,170.71x = 94,209,639.95
  5. Step 5: Solve for x
    x = 94,209,639.95/11,170.71
  6. Step 6: Final answer
    x = 8,433.63

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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.