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Finding the Fourth Proportional to 13,453.91, 20,184.10 and 4,219.91

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Solution

The fourth proportional to 13,453.91, 20,184.10 and 4,219.91 is: 6,330.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,453.91 : 20,184.10 = 4,219.91 : x
  2. Step 2: Convert to fraction form
    13,453.91/20,184.10 = 4,219.91/x
  3. Step 3: Cross multiply
    13,453.91x = 20,184.10 × 4,219.91
  4. Step 4: Simplify right side
    13,453.91x = 85,175,085.43
  5. Step 5: Solve for x
    x = 85,175,085.43/13,453.91
  6. Step 6: Final answer
    x = 6,330.88

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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.