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Finding the Fourth Proportional to 18,824.01, 28,217.66 and 8,960.64

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Solution

The fourth proportional to 18,824.01, 28,217.66 and 8,960.64 is: 13,432.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,824.01 : 28,217.66 = 8,960.64 : x
  2. Step 2: Convert to fraction form
    18,824.01/28,217.66 = 8,960.64/x
  3. Step 3: Cross multiply
    18,824.01x = 28,217.66 × 8,960.64
  4. Step 4: Simplify right side
    18,824.01x = 252,848,248.10
  5. Step 5: Solve for x
    x = 252,848,248.10/18,824.01
  6. Step 6: Final answer
    x = 13,432.22

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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.