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Finding the Fourth Proportional to 13,674.97, 20,515.20 and 4,316.43

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Solution

The fourth proportional to 13,674.97, 20,515.20 and 4,316.43 is: 6,475.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,674.97 : 20,515.20 = 4,316.43 : x
  2. Step 2: Convert to fraction form
    13,674.97/20,515.20 = 4,316.43/x
  3. Step 3: Cross multiply
    13,674.97x = 20,515.20 × 4,316.43
  4. Step 4: Simplify right side
    13,674.97x = 88,552,424.74
  5. Step 5: Solve for x
    x = 88,552,424.74/13,674.97
  6. Step 6: Final answer
    x = 6,475.51

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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.