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Finding the Fourth Proportional to 13,616.58, 20,423.01 and 3,754.44

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Solution

The fourth proportional to 13,616.58, 20,423.01 and 3,754.44 is: 5,631.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,616.58 : 20,423.01 = 3,754.44 : x
  2. Step 2: Convert to fraction form
    13,616.58/20,423.01 = 3,754.44/x
  3. Step 3: Cross multiply
    13,616.58x = 20,423.01 × 3,754.44
  4. Step 4: Simplify right side
    13,616.58x = 76,676,965.66
  5. Step 5: Solve for x
    x = 76,676,965.66/13,616.58
  6. Step 6: Final answer
    x = 5,631.15

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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.