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Finding the Fourth Proportional to 20,449.95, 30,674.82 and 5,457.03

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Solution

The fourth proportional to 20,449.95, 30,674.82 and 5,457.03 is: 8,185.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.95 : 30,674.82 = 5,457.03 : x
  2. Step 2: Convert to fraction form
    20,449.95/30,674.82 = 5,457.03/x
  3. Step 3: Cross multiply
    20,449.95x = 30,674.82 × 5,457.03
  4. Step 4: Simplify right side
    20,449.95x = 167,393,412.98
  5. Step 5: Solve for x
    x = 167,393,412.98/20,449.95
  6. Step 6: Final answer
    x = 8,185.52

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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.