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Finding the Fourth Proportional to 15,081.84, 20,812.46 and 8,367.57

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Solution

The fourth proportional to 15,081.84, 20,812.46 and 8,367.57 is: 11,546.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,081.84 : 20,812.46 = 8,367.57 : x
  2. Step 2: Convert to fraction form
    15,081.84/20,812.46 = 8,367.57/x
  3. Step 3: Cross multiply
    15,081.84x = 20,812.46 × 8,367.57
  4. Step 4: Simplify right side
    15,081.84x = 174,149,674.08
  5. Step 5: Solve for x
    x = 174,149,674.08/15,081.84
  6. Step 6: Final answer
    x = 11,546.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.